Rank	Countries/Territories	Count	Percent
1	United States	466	50.3%
2	China	168	18.1%
3	Germany	90	9.7%
4	Japan	27	2.9%
5	France	20	2.2%
6	Netherlands	20	2.2%
7	Switzerland	12	1.3%
8	Ukraine	12	1.3%
9	Canada	12	1.3%
10	Australia	10	1.1%
11	India	9	1%
12	United Kingdom	9	1%
13	Singapore	9	1%
14	Taiwan	8	0.9%
15	Korea, Republic of	8	0.9%
16	Hong Kong	7	0.8%
17	Brazil	6	0.6%
18	Mexico	6	0.6%
19	Romania	4	0.4%
20	Peru	3	0.3%
21	Cyprus	3	0.3%
22	Ireland	3	0.3%
23	Malaysia	3	0.3%
24	Iran, Islamic Republic of	2	0.2%
25	Ethiopia	2	0.2%
26	Mongolia	2	0.2%
27	New Zealand	1	0.1%
28	Pakistan	1	0.1%
29	Philippines	1	0.1%
30	Argentina	1	0.1%
31	Indonesia	1	0.1%
32	Lebanon	1	0.1%