Rank	Countries/Territories	Count	Percent
1	United States	520	48.3%
2	China	293	27.2%
3	Germany	103	9.6%
4	France	52	4.8%
5	Singapore	19	1.8%
6	Canada	12	1.1%
7	Netherlands	11	1%
8	Korea, Republic of	7	0.7%
9	Japan	6	0.6%
10	Taiwan	5	0.5%
11	Thailand	5	0.5%
12	Cyprus	5	0.5%
13	Australia	4	0.4%
14	India	4	0.4%
15	Ireland	3	0.3%
16	Mexico	3	0.3%
17	Turkey	3	0.3%
18	Ukraine	2	0.2%
19	South Africa	2	0.2%
20	Spain	2	0.2%
21	Portugal	2	0.2%
22	Russia	2	0.2%
23	Iran, Islamic Republic of	2	0.2%
24	Argentina	2	0.2%
25	Ecuador	2	0.2%
26	Hong Kong	1	0.1%
27	Brazil	1	0.1%
28	Mongolia	1	0.1%
29	Switzerland	1	0.1%
30	United Kingdom	1	0.1%