Rank	Countries/Territories	Count	Percent
1	United States	590	37.4%
2	China	538	34.1%
3	Germany	180	11.4%
4	Canada	40	2.5%
5	India	23	1.5%
6	Netherlands	20	1.3%
7	France	17	1.1%
8	Australia	13	0.8%
9	Switzerland	12	0.8%
10	Singapore	11	0.7%
11	Japan	11	0.7%
12	Turkey	11	0.7%
13	Norway	10	0.6%
14	Cyprus	10	0.6%
15	Czech Republic	9	0.6%
16	Taiwan	9	0.6%
17	Korea, Republic of	9	0.6%
18	United Kingdom	9	0.6%
19	Ireland	7	0.4%
20	Hong Kong	7	0.4%
21	Lithuania	6	0.4%
22	Iran, Islamic Republic of	4	0.3%
23	Bangladesh	3	0.2%
24	Mexico	3	0.2%
25	Thailand	3	0.2%
26	Portugal	3	0.2%
27	Saudi Arabia	2	0.1%
28	Nigeria	2	0.1%
29	Malaysia	2	0.1%
30	Argentina	2	0.1%
31	Iraq	2	0.1%
32	Hungary	2	0.1%
33	Peru	2	0.1%
34	Viet Nam	1	0.1%
35	Indonesia	1	0.1%
36	Egypt	1	0.1%
37	Mongolia	1	0.1%
38	Serbia	1	0.1%
39	Pakistan	1	0.1%
40	South Africa	1	0.1%