Rank	Countries/Territories	Count	Percent
1	United States	339	42.8%
2	China	256	32.3%
3	Germany	43	5.4%
4	Netherlands	31	3.9%
5	Japan	16	2%
6	Canada	16	2%
7	Singapore	11	1.4%
8	United Kingdom	9	1.1%
9	Iran, Islamic Republic of	7	0.9%
10	Hong Kong	6	0.8%
11	India	6	0.8%
12	France	6	0.8%
13	Australia	5	0.6%
14	Cyprus	5	0.6%
15	Mauritius	4	0.5%
16	South Africa	4	0.5%
17	Russia	4	0.5%
18	Taiwan	3	0.4%
19	Egypt	3	0.4%
20	Cuba	2	0.3%
21	Brazil	2	0.3%
22	Mongolia	2	0.3%
23	Iraq	2	0.3%
24	Peru	2	0.3%
25	Viet Nam	2	0.3%
26	Norway	1	0.1%
27	Ukraine	1	0.1%
28	Spain	1	0.1%
29	Morocco	1	0.1%
30	Latvia	1	0.1%
31	Argentina	1	0.1%