Rank	Countries/Territories	Count	Percent
1	United States	682	40.3%
2	China	584	34.5%
3	Germany	132	7.8%
4	France	103	6.1%
5	Canada	64	3.8%
6	Japan	24	1.4%
7	Netherlands	16	0.9%
8	Switzerland	11	0.6%
9	Ireland	9	0.5%
10	Singapore	9	0.5%
11	India	8	0.5%
12	Korea, Republic of	5	0.3%
13	Hong Kong	5	0.3%
14	Argentina	5	0.3%
15	Latvia	4	0.2%
16	Russia	4	0.2%
17	Serbia	4	0.2%
18	Australia	3	0.2%
19	Belgium	3	0.2%
20	Cyprus	3	0.2%
21	Mongolia	2	0.1%
22	Iran, Islamic Republic of	2	0.1%
23	Iraq	2	0.1%
24	Norway	2	0.1%
25	Spain	2	0.1%
26	Sweden	2	0.1%
27	United Kingdom	2	0.1%
28	Poland	1	0.1%
29	Finland	1	0.1%