Rank	Countries/Territories	Count	Percent
1	United States	510	40.3%
2	China	367	29%
3	Germany	133	10.5%
4		40	3.2%
5	France	39	3.1%
6	Canada	29	2.3%
7	Japan	20	1.6%
8	Singapore	17	1.3%
9	Russia	16	1.3%
10	Netherlands	14	1.1%
11	Korea, Republic of	10	0.8%
12	Kenya	8	0.6%
13	Bulgaria	8	0.6%
14	Cyprus	7	0.6%
15	South Africa	7	0.6%
16	Taiwan	5	0.4%
17	India	5	0.4%
18	Australia	4	0.3%
19	Ukraine	4	0.3%
20	Ireland	3	0.2%
21	Mongolia	3	0.2%
22	Argentina	3	0.2%
23	Egypt	3	0.2%
24	Hong Kong	3	0.2%
25	Sweden	2	0.2%
26	Romania	2	0.2%
27	Norway	1	0.1%
28	Poland	1	0.1%
29	United Kingdom	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Latvia	1	0.1%