Rank	Countries/Territories	Count	Percent
1	United States	245	37.3%
2	China	172	26.2%
3	Germany	61	9.3%
4	Japan	18	2.7%
5	Netherlands	18	2.7%
6	France	15	2.3%
7	United Kingdom	15	2.3%
8	Canada	12	1.8%
9	India	11	1.7%
10	Australia	10	1.5%
11	Argentina	9	1.4%
12	Iraq	7	1.1%
13	Ireland	7	1.1%
14	Korea, Republic of	6	0.9%
15	Singapore	6	0.9%
16	Ghana	5	0.8%
17	Italy	4	0.6%
18	Mauritius	4	0.6%
19	Russia	4	0.6%
20	Malaysia	3	0.5%
21	Switzerland	3	0.5%
22	Egypt	3	0.5%
23	Indonesia	2	0.3%
24	Cyprus	2	0.3%
25	Thailand	2	0.3%
26	Myanmar	2	0.3%
27	Turkey	1	0.2%
28	Ukraine	1	0.2%
29	Tanzania, United Republic of	1	0.2%
30	Mongolia	1	0.2%
31	Saudi Arabia	1	0.2%
32	Romania	1	0.2%
33	Denmark	1	0.2%
34	Greece	1	0.2%
35	Hong Kong	1	0.2%
36	Iran, Islamic Republic of	1	0.2%
37	Lithuania	1	0.2%