Rank	Countries/Territories	Count	Percent
1	United States	157	31.8%
2	Germany	64	13%
3	China	61	12.3%
4	France	31	6.3%
5	India	29	5.9%
6	United Kingdom	22	4.5%
7	Taiwan	14	2.8%
8	Japan	13	2.6%
9	Spain	13	2.6%
10	Czech Republic	13	2.6%
11	Korea, Republic of	10	2%
12	Netherlands	6	1.2%
13	Slovenia	5	1%
14	Denmark	5	1%
15	Brazil	5	1%
16	Canada	5	1%
17	Indonesia	5	1%
18	Ireland	5	1%
19	Italy	4	0.8%
20	Iran, Islamic Republic of	4	0.8%
21	Cyprus	3	0.6%
22	Portugal	3	0.6%
23	Sweden	2	0.4%
24	Switzerland	2	0.4%
25	Thailand	2	0.4%
26	Australia	2	0.4%
27	Hong Kong	2	0.4%
28	Greece	1	0.2%
29	Colombia	1	0.2%
30	Ukraine	1	0.2%
31	Romania	1	0.2%
32	Singapore	1	0.2%
33	Nigeria	1	0.2%
34	Kuwait	1	0.2%