Rank	Countries/Territories	Count	Percent
1	United States	372	33.6%
2	China	302	27.3%
3	Germany	88	7.9%
4	India	61	5.5%
5	Japan	56	5.1%
6	Netherlands	24	2.2%
7	Canada	22	2%
8	Australia	22	2%
9	Singapore	19	1.7%
10	United Kingdom	17	1.5%
11	France	17	1.5%
12	Iran, Islamic Republic of	16	1.4%
13	Greece	16	1.4%
14	Ireland	9	0.8%
15	Brazil	6	0.5%
16		6	0.5%
17	Malaysia	6	0.5%
18	Thailand	5	0.5%
19	South Africa	5	0.5%
20	Italy	5	0.5%
21	Cyprus	4	0.4%
22	Nigeria	4	0.4%
23	Spain	3	0.3%
24	Uganda	3	0.3%
25	Bulgaria	3	0.3%
26	Korea, Republic of	3	0.3%
27	Indonesia	2	0.2%
28	Argentina	2	0.2%
29	Switzerland	2	0.2%
30	Portugal	2	0.2%
31	Russia	2	0.2%
32	Taiwan	1	0.1%
33	Mongolia	1	0.1%
34	Hong Kong	1	0.1%