Rank	Countries/Territories	Count	Percent
1	United States	264	36.5%
2	China	172	23.8%
3	Germany	93	12.8%
4	India	44	6.1%
5	Japan	18	2.5%
6	France	15	2.1%
7	Iran, Islamic Republic of	14	1.9%
8	Ireland	11	1.5%
9	Netherlands	9	1.2%
10	Italy	8	1.1%
11	Thailand	6	0.8%
12	Turkey	6	0.8%
13	Canada	6	0.8%
14	Australia	4	0.6%
15	Brazil	4	0.6%
16	Cyprus	4	0.6%
17	Israel	4	0.6%
18	Mongolia	4	0.6%
19	Greece	3	0.4%
20	Ukraine	3	0.4%
21	Korea, Republic of	3	0.4%
22	Malaysia	3	0.4%
23	Belarus	3	0.4%
24	Spain	3	0.4%
25	Egypt	2	0.3%
26	Mexico	2	0.3%
27	Russia	2	0.3%
28	New Zealand	2	0.3%
29	Norway	1	0.1%
30	Philippines	1	0.1%
31	Romania	1	0.1%
32	Hong Kong	1	0.1%
33	Saudi Arabia	1	0.1%
34	Serbia	1	0.1%
35	Slovenia	1	0.1%
36	United Kingdom	1	0.1%
37	Belgium	1	0.1%
38	Chile	1	0.1%
39	Switzerland	1	0.1%
40	Taiwan	1	0.1%