Rank	Countries/Territories	Count	Percent
1	United States	264	38.6%
2	China	185	27%
3	Germany	78	11.4%
4	Japan	34	5%
5	Russia	15	2.2%
6	United Kingdom	13	1.9%
7	Singapore	11	1.6%
8	Chile	7	1%
9	Netherlands	7	1%
10	Mexico	6	0.9%
11	Cyprus	6	0.9%
12	France	5	0.7%
13	Australia	5	0.7%
14	Nigeria	5	0.7%
15	Romania	4	0.6%
16	Ukraine	4	0.6%
17	Hong Kong	4	0.6%
18	Iran, Islamic Republic of	4	0.6%
19	Viet Nam	3	0.4%
20	Taiwan	2	0.3%
21	Turkey	2	0.3%
22	Belgium	2	0.3%
23	Canada	2	0.3%
24	Korea, Republic of	2	0.3%
25	Mauritius	2	0.3%
26	Mongolia	2	0.3%
27	Nepal	2	0.3%
28	New Zealand	1	0.1%
29	Argentina	1	0.1%
30	Bulgaria	1	0.1%
31	Iraq	1	0.1%
32	Italy	1	0.1%
33	Switzerland	1	0.1%
34	Peru	1	0.1%
35	Poland	1	0.1%