Rank	Countries/Territories	Count	Percent
1	United States	382	49.3%
2	China	140	18.1%
3	Germany	75	9.7%
4	Japan	27	3.5%
5	Netherlands	20	2.6%
6	France	17	2.2%
7	Switzerland	12	1.5%
8	Ukraine	12	1.5%
9	United Kingdom	9	1.2%
10	Canada	9	1.2%
11	Korea, Republic of	8	1%
12	Hong Kong	7	0.9%
13	Australia	7	0.9%
14	Singapore	7	0.9%
15	Mexico	6	0.8%
16	Brazil	6	0.8%
17	India	6	0.8%
18	Romania	4	0.5%
19	Peru	3	0.4%
20	Ireland	3	0.4%
21	Taiwan	3	0.4%
22	Iran, Islamic Republic of	2	0.3%
23	Ethiopia	2	0.3%
24	Cyprus	1	0.1%
25	Argentina	1	0.1%
26	Indonesia	1	0.1%
27	Lebanon	1	0.1%
28	Malaysia	1	0.1%
29	New Zealand	1	0.1%
30	Pakistan	1	0.1%
31	Philippines	1	0.1%