Rank	Countries/Territories	Count	Percent
1	United States	599	42%
2	China	345	24.2%
3	Japan	140	9.8%
4	Germany	132	9.3%
5	France	35	2.5%
6	India	26	1.8%
7	Korea, Republic of	17	1.2%
8	Viet Nam	17	1.2%
9		14	1%
10	Singapore	12	0.8%
11	Mongolia	11	0.8%
12	Sweden	10	0.7%
13	Czech Republic	9	0.6%
14	Thailand	8	0.6%
15	Netherlands	6	0.4%
16	United Kingdom	6	0.4%
17	Australia	5	0.4%
18	Canada	5	0.4%
19	Hong Kong	4	0.3%
20	Ireland	4	0.3%
21	Iran, Islamic Republic of	3	0.2%
22	Chile	3	0.2%
23	Nicaragua	3	0.2%
24	Russia	2	0.1%
25	Mexico	2	0.1%
26	Cyprus	2	0.1%
27	Belgium	2	0.1%
28	Argentina	1	0.1%
29	Italy	1	0.1%
30	Peru	1	0.1%
31	Ukraine	1	0.1%