Rank	Countries/Territories	Count	Percent
1	United States	537	42.5%
2	China	372	29.5%
3	Germany	144	11.4%
4	France	39	3.1%
5	Canada	30	2.4%
6	Japan	30	2.4%
7	Thailand	17	1.3%
8	Netherlands	11	0.9%
9	Korea, Republic of	10	0.8%
10	Hong Kong	8	0.6%
11	Norway	7	0.6%
12	Cyprus	6	0.5%
13	United Kingdom	5	0.4%
14	Taiwan	4	0.3%
15	Togo	4	0.3%
16	Argentina	4	0.3%
17	Australia	4	0.3%
18	Belgium	4	0.3%
19	India	4	0.3%
20	Egypt	3	0.2%
21	Ireland	3	0.2%
22	Italy	2	0.2%
23	Malaysia	2	0.2%
24	Indonesia	2	0.2%
25	Saudi Arabia	2	0.2%
26	Viet Nam	2	0.2%
27	South Africa	1	0.1%
28	Ukraine	1	0.1%
29	Pakistan	1	0.1%
30	Russia	1	0.1%
31	Iran, Islamic Republic of	1	0.1%
32	Mongolia	1	0.1%
33	Luxembourg	1	0.1%