SAS Output

Obs	Country	1990-1994	1995-1999	2000-2004	2005-2009	2010-2014	All years
1	All countries	157	136	176	225	237	931
2	United States	42	34	57	79	64	276
3	Australia	22	24	24	28	38	136
4	China	8	6	12	25	66	117
5	United Kingdom	25	21	17	34	20	117
6	Germany	7	11	19	30	47	114
7	France	12	9	17	19	31	88
8	Brazil	6	11	16	23	23	79
9	Japan	23	9	13	12	10	67
10	Italy	6	7	11	10	5	39
11	Switzerland	.	2	2	5	18	27
12	India	12	7	4	.	3	26
13	Canada	6	4	5	6	4	25
14	Netherlands	1	4	9	7	2	23
15	Belgium	6	9	2	.	1	18
16	Denmark	2	2	4	4	5	17
17	Austria	.	4	3	2	4	13
18	Norway	.	.	1	7	3	11
19	New Zealand	1	1	3	1	4	10
20	Peru	2	3	4	.	.	9
21	Mexico	2	.	.	3	2	7
22	Sweden	.	.	2	2	3	7
23	Korea, Republic of	1	.	1	2	2	6
24	Czech Republic	.	.	.	2	3	5
25	Pakistan	1	.	2	1	1	5
26	Russian Federation	.	1	1	1	2	5
27	Israel	2	.	1	1	.	4
28	Taiwan	.	2	2	.	.	4
29	USSR	4	.	.	.	.	4
30	Chile	.	.	1	2	.	3
31	Hungary	1	.	2	.	.	3
32	Poland	.	.	.	1	2	3
33	South Africa	1	.	.	1	1	3
34	Spain	.	.	.	1	2	3
35	Argentina	.	.	.	2	.	2
36	Greece	.	1	.	.	1	2
37	Indonesia	.	1	1	.	.	2
38	Ireland	.	.	.	.	2	2
39	Kazakhstan	.	.	.	.	2	2
40	Morocco	.	2	.	.	.	2
41	Slovak Republic	.	1	.	.	1	2
42	Algeria	.	.	.	.	1	1
43	Egypt	.	1	.	.	.	1
44	Finland	.	.	.	.	1	1
45	French Polynesia	.	.	.	.	1	1
46	Iran, Islamic Republic of	.	.	.	1	.	1
47	Libya	.	.	.	.	1	1
48	Oman	.	.	.	1	.	1
49	Romania	1	.	.	.	.	1
50	Singapore	.	.	1	.	.	1
51	Sri Lanka	.	.	.	.	1	1
52	Turkey	.	.	.	.	1	1
53	Ukraine	.	.	.	1	.	1
54	Viet Nam	.	1	.	.	.	1

Obs	Country	1990-1994	1995-1999	2000-2004	2005-2009	2010-2014	All years
1	All countries	100.0	100.0	100.0	100.0	100.0	100.0
2	United States	26.8	25.0	32.4	35.1	27.0	29.6
3	Australia	14.0	17.6	13.6	12.4	16.0	14.6
4	China	5.1	4.4	6.8	11.1	27.8	12.6
5	United Kingdom	15.9	15.4	9.7	15.1	8.4	12.6
6	Germany	4.5	8.1	10.8	13.3	19.8	12.2
7	France	7.6	6.6	9.7	8.4	13.1	9.5
8	Brazil	3.8	8.1	9.1	10.2	9.7	8.5
9	Japan	14.6	6.6	7.4	5.3	4.2	7.2
10	Italy	3.8	5.1	6.3	4.4	2.1	4.2
11	Switzerland	.	1.5	1.1	2.2	7.6	2.9
12	India	7.6	5.1	2.3	.	1.3	2.8
13	Canada	3.8	2.9	2.8	2.7	1.7	2.7
14	Netherlands	0.6	2.9	5.1	3.1	0.8	2.5
15	Belgium	3.8	6.6	1.1	.	0.4	1.9
16	Denmark	1.3	1.5	2.3	1.8	2.1	1.8
17	Austria	.	2.9	1.7	0.9	1.7	1.4
18	Norway	.	.	0.6	3.1	1.3	1.2
19	New Zealand	0.6	0.7	1.7	0.4	1.7	1.1
20	Peru	1.3	2.2	2.3	.	.	1.0
21	Mexico	1.3	.	.	1.3	0.8	0.8
22	Sweden	.	.	1.1	0.9	1.3	0.8
23	Korea, Republic of	0.6	.	0.6	0.9	0.8	0.6
24	Czech Republic	.	.	.	0.9	1.3	0.5
25	Pakistan	0.6	.	1.1	0.4	0.4	0.5
26	Russian Federation	.	0.7	0.6	0.4	0.8	0.5
27	Israel	1.3	.	0.6	0.4	.	0.4
28	Taiwan	.	1.5	1.1	.	.	0.4
29	USSR	2.5	.	.	.	.	0.4
30	Chile	.	.	0.6	0.9	.	0.3
31	Hungary	0.6	.	1.1	.	.	0.3
32	Poland	.	.	.	0.4	0.8	0.3
33	South Africa	0.6	.	.	0.4	0.4	0.3
34	Spain	.	.	.	0.4	0.8	0.3
35	Argentina	.	.	.	0.9	.	0.2
36	Greece	.	0.7	.	.	0.4	0.2
37	Indonesia	.	0.7	0.6	.	.	0.2
38	Ireland	.	.	.	.	0.8	0.2
39	Kazakhstan	.	.	.	.	0.8	0.2
40	Morocco	.	1.5	.	.	.	0.2
41	Slovak Republic	.	0.7	.	.	0.4	0.2
42	Algeria	.	.	.	.	0.4	0.1
43	Egypt	.	0.7	.	.	.	0.1
44	Finland	.	.	.	.	0.4	0.1
45	French Polynesia	.	.	.	.	0.4	0.1
46	Iran, Islamic Republic of	.	.	.	0.4	.	0.1
47	Libya	.	.	.	.	0.4	0.1
48	Oman	.	.	.	0.4	.	0.1
49	Romania	0.6	.	.	.	.	0.1
50	Singapore	.	.	0.6	.	.	0.1
51	Sri Lanka	.	.	.	.	0.4	0.1
52	Turkey	.	.	.	.	0.4	0.1
53	Ukraine	.	.	.	0.4	.	0.1
54	Viet Nam	.	0.7	.	.	.	0.1

Obs	Country	1990-1994	1995-1999	2000-2004	2005-2009	2010-2014	All years
1	All countries	20.8	22.2	20.9	25.5	14.3	103.7
2	United States	11.0	12.3	12.1	18.2	6.4	60.0
3	Australia	8.6	4.3	3.0	3.0	0.5	19.4
4	China	0.0	0.3	1.0	1.0	0.8	3.2
5	United Kingdom	7.5	4.6	3.0	5.0	3.0	23.1
6	Germany	0.0	0.3	2.5	1.0	3.9	7.7
7	France	0.0	0.3	2.3	4.4	3.5	10.5
8	Brazil	0.0	0.0	0.0	0.0	0.3	0.3
9	Japan	0.0	1.0	0.0	0.0	0.0	1.0
10	Italy	0.0	0.0	1.0	1.0	0.0	2.0
11	Switzerland	.	1.0	0.0	0.0	2.0	3.0
12	India	0.0	0.3	0.0	.	0.0	0.3
13	Canada	1.7	1.3	0.0	0.0	0.0	3.0
14	Netherlands	0.0	0.0	1.0	0.0	0.0	1.0
15	Belgium	0.0	1.0	0.0	.	0.0	1.0
16	Denmark	0.0	0.0	0.0	2.0	0.0	2.0
17	Austria	.	1.0	0.0	0.0	1.0	2.0
18	Norway	.	.	0.0	1.0	0.0	1.0
19	New Zealand	0.7	0.0	0.0	0.0	0.0	0.7
20	Peru	0.0	0.0	0.0	.	.	0.0
21	Mexico	0.0	.	.	0.0	0.0	0.0
22	Sweden	.	.	0.0	0.0	0.0	0.0
23	Korea, Republic of	0.0	.	0.0	0.0	0.0	0.0
24	Czech Republic	.	.	.	0.0	0.0	0.0
25	Pakistan	0.0	.	0.0	0.0	0.0	0.0
26	Russian Federation	.	0.0	0.0	0.0	0.0	0.0
27	Israel	0.0	.	0.0	0.0	.	0.0
28	Taiwan	.	0.0	0.0	.	.	0.0
29	USSR	0.0	.	.	.	.	0.0
30	Chile	.	.	0.0	0.0	.	0.0
31	Hungary	0.0	.	1.0	.	.	1.0
32	Poland	.	.	.	0.0	0.0	0.0
33	South Africa	1.0	.	.	0.0	0.0	1.0
34	Spain	.	.	.	0.0	0.0	0.0
35	Argentina	.	.	.	0.0	.	0.0
36	Greece	.	0.0	.	.	0.0	0.0
37	Indonesia	.	0.0	0.0	.	.	0.0
38	Ireland	.	.	.	.	0.0	0.0
39	Kazakhstan	.	.	.	.	0.0	0.0
40	Morocco	.	0.0	.	.	.	0.0
41	Slovak Republic	.	0.0	.	.	0.0	0.0
42	Algeria	.	.	.	.	0.0	0.0
43	Egypt	.	0.0	.	.	.	0.0
44	Finland	.	.	.	.	0.0	0.0
45	French Polynesia	.	.	.	.	0.0	0.0
46	Iran, Islamic Republic of	.	.	.	0.0	.	0.0
47	Libya	.	.	.	.	0.0	0.0
48	Oman	.	.	.	0.0	.	0.0
49	Romania	0.0	.	.	.	.	0.0
50	Singapore	.	.	0.0	.	.	0.0
51	Sri Lanka	.	.	.	.	0.0	0.0
52	Turkey	.	.	.	.	0.0	0.0
53	Ukraine	.	.	.	0.0	.	0.0
54	Viet Nam	.	0.0	.	.	.	0.0

Obs	Country	1990-1994	1995-1999	2000-2004	2005-2009	2010-2014	All years
1	All countries	13.2	16.3	11.9	11.4	6.0	11.1
2	United States	26.2	41.4	22.3	24.6	9.4	23.5
3	Australia	34.0	14.8	18.7	6.8	1.5	14.3
4	China	0.0	3.3	2.8	4.7	1.0	2.0
5	United Kingdom	22.7	21.5	16.3	9.2	25.8	18.0
6	Germany	0.0	2.1	8.4	3.2	10.2	6.1
7	France	0.0	3.1	13.2	20.0	11.0	10.3
8	Brazil	0.0	0.0	0.0	0.0	1.1	0.3
9	Japan	0.0	11.1	0.0	0.0	0.0	1.7
10	Italy	0.0	0.0	5.1	9.9	0.0	3.9
11	Switzerland	.	60.0	0.0	0.0	16.7	13.3
12	India	0.0	5.3	0.0	.	0.0	1.4
13	Canada	24.8	22.6	0.0	0.0	0.0	12.3
14	Netherlands	0.0	0.0	12.6	0.0	0.0	5.8
15	Belgium	0.0	13.5	0.0	.	0.0	7.7
16	Denmark	0.0	0.0	0.0	40.3	0.0	4.4
17	Austria	.	22.2	0.0	0.0	20.0	12.0
18	Norway	.	.	0.0	39.5	0.0	20.9
19	New Zealand	66.7	0.0	0.0	0.0	0.0	9.8
20	Peru	0.0	0.0	0.0	.	.	0.0
21	Mexico	0.0	.	.	0.0	0.0	0.0
22	Sweden	.	.	0.0	0.0	0.0	0.0
23	Korea, Republic of	0.0	.	0.0	0.0	0.0	0.0
24	Czech Republic	.	.	.	0.0	0.0	0.0
25	Pakistan	0.0	.	0.0	0.0	0.0	0.0
26	Russian Federation	.	0.0	0.0	0.0	0.0	0.0
27	Israel	0.0	.	0.0	0.0	.	0.0
28	Taiwan	.	0.0	0.0	.	.	0.0
29	USSR	0.0	.	.	.	.	0.0
30	Chile	.	.	0.0	0.0	.	0.0
31	Hungary	0.0	.	60.0	.	.	27.3
32	Poland	.	.	.	0.0	0.0	0.0
33	South Africa	100.0	.	.	0.0	0.0	29.2
34	Spain	.	.	.	0.0	0.0	0.0
35	Argentina	.	.	.	0.0	.	0.0
36	Greece	.	0.0	.	.	0.0	0.0
37	Indonesia	.	0.0	0.0	.	.	0.0
38	Ireland	.	.	.	.	0.0	0.0
39	Kazakhstan	.	.	.	.	0.0	0.0
40	Morocco	.	0.0	.	.	.	0.0
41	Slovak Republic	.	0.0	.	.	0.0	0.0
42	Algeria	.	.	.	.	0.0	0.0
43	Egypt	.	0.0	.	.	.	0.0
44	Finland	.	.	.	.	0.0	0.0
45	French Polynesia	.	.	.	.	0.0	0.0
46	Iran, Islamic Republic of	.	.	.	0.0	.	0.0
47	Libya	.	.	.	.	0.0	0.0
48	Oman	.	.	.	0.0	.	0.0
49	Romania	0.0	.	.	.	.	0.0
50	Singapore	.	.	0.0	.	.	0.0
51	Sri Lanka	.	.	.	.	0.0	0.0
52	Turkey	.	.	.	.	0.0	0.0
53	Ukraine	.	.	.	0.0	.	0.0
54	Viet Nam	.	0.0	.	.	.	0.0

Obs	Country	1990-1994	1995-1999	2000-2004	2005-2009	2010-2014	All years
1	All countries	2.28	1.62	1.22	1.16	0.91	1.36
2	United States	2.62	3.94	1.96	1.92	1.25	2.17
3	Australia	5.94	1.16	1.35	0.91	0.71	1.90
4	China	0.23	0.80	0.45	0.57	0.36	0.42
5	United Kingdom	6.56	1.67	1.56	1.51	2.64	2.90
6	Germany	0.72	0.98	1.35	0.67	0.93	0.93
7	France	0.38	0.54	1.05	1.71	1.50	1.14
8	Brazil	0.46	0.37	0.57	0.56	0.53	0.52
9	Japan	0.49	1.06	0.37	0.54	0.40	0.55
10	Italy	0.55	0.26	0.66	0.58	1.07	0.59
11	Switzerland	.	3.85	0.61	0.76	1.50	1.36
12	India	0.30	0.42	0.34	.	0.65	0.37
13	Canada	2.20	1.52	0.66	0.53	0.52	1.27
14	Netherlands	2.37	0.91	0.87	0.62	1.15	0.92
15	Belgium	0.68	1.70	0.79	.	0.00	1.24
16	Denmark	0.51	0.55	0.40	2.02	0.56	0.65
17	Austria	.	1.65	0.76	0.78	1.95	1.33
18	Norway	.	.	1.41	1.27	1.24	1.27
19	New Zealand	2.88	0.41	1.29	0.52	0.66	1.13
20	Peru	0.19	0.98	0.99	.	.	0.73
21	Mexico	0.36	.	.	0.13	0.35	0.27
22	Sweden	.	.	1.18	0.99	0.45	0.87
23	Korea, Republic of	0.00	.	0.46	0.25	0.50	0.33
24	Czech Republic	.	.	.	0.25	0.21	0.22
25	Pakistan	0.19	.	0.70	0.00	0.00	0.31
26	Russian Federation	.	0.00	0.00	0.30	0.07	0.09
27	Israel	1.18	.	1.05	0.22	.	1.05
28	Taiwan	.	0.44	0.05	.	.	0.22
29	USSR	0.06	.	.	.	.	0.06
30	Chile	.	.	0.04	1.10	.	0.84
31	Hungary	0.28	.	4.21	.	.	2.07
32	Poland	.	.	.	0.81	0.65	0.73
33	South Africa	10.38	.	.	0.42	0.66	3.36
34	Spain	.	.	.	0.71	0.74	0.73
35	Argentina	.	.	.	0.33	.	0.33
36	Greece	.	0.00	.	.	0.91	0.30
37	Indonesia	.	0.09	0.22	.	.	0.12
38	Ireland	.	.	.	.	1.03	1.03
39	Kazakhstan	.	.	.	.	1.32	1.32
40	Morocco	.	0.06	.	.	.	0.06
41	Slovak Republic	.	0.28	.	.	0.62	0.34
42	Algeria	.	.	.	.	0.44	0.44
43	Egypt	.	0.29	.	.	.	0.29
44	Finland	.	.	.	.	0.86	0.86
45	French Polynesia	.	.	.	.	0.22	0.22
46	Iran, Islamic Republic of	.	.	.	0.00	.	0.00
47	Libya	.	.	.	.	0.94	0.94
48	Oman	.	.	.	0.00	.	0.00
49	Romania	0.05	.	.	.	.	0.05
50	Singapore	.	.	0.66	.	.	0.66
51	Sri Lanka	.	.	.	.	0.57	0.57
52	Turkey	.	.	.	.	0.00	0.00
53	Ukraine	.	.	.	1.11	.	1.11
54	Viet Nam	.	0.00	.	.	.	0.00

Lev2: GAS HYDRATE//ANAEROBIC OXIDATION OF METHANE//GAS HYDRATES - Statistics for Countries

Statistics per Country

Number of publications, full counts

Number of publications, full counts

Share of the total number of publications in the field, full counts (%)

Share of the total number of publications in the field, full counts (%)

Number of publications among 10% most cited in field, full counts

Number of publications among 10% most cited in field, full counts

Share of publications among 10% most cited in field, fractionalized (%)

Share of publications among 10% most cited in field, fractionalized (%)

Field normalized citation rate (cf), fractionalized

Field normalized citation rate (cf), fractionalized