Rank	Countries/Territories	Count	Percent
1	United States	180	32.9%
2	China	139	25.4%
3	Japan	37	6.8%
4	India	33	6%
5	Germany	27	4.9%
6	Spain	14	2.6%
7	Austria	12	2.2%
8	Indonesia	11	2%
9	France	8	1.5%
10	Russia	8	1.5%
11	South Africa	8	1.5%
12	Iran, Islamic Republic of	7	1.3%
13	Korea, Republic of	6	1.1%
14	Netherlands	6	1.1%
15	Taiwan	5	0.9%
16	Turkey	5	0.9%
17	Philippines	4	0.7%
18	Canada	4	0.7%
19	United Kingdom	4	0.7%
20	Cyprus	3	0.5%
21	Denmark	2	0.4%
22	Colombia	2	0.4%
23	Croatia	2	0.4%
24	Australia	2	0.4%
25	Italy	2	0.4%
26	Mexico	2	0.4%
27	Kazakhstan	2	0.4%
28	Tanzania, United Republic of	2	0.4%
29	Switzerland	2	0.4%
30	Ukraine	1	0.2%
31	Lao People's Democratic Republic	1	0.2%
32	Romania	1	0.2%
33	Argentina	1	0.2%
34	Brazil	1	0.2%
35	Hong Kong	1	0.2%
36	Iraq	1	0.2%
37	Viet Nam	1	0.2%