Rank	Countries/Territories	Count	Percent
1	United States	344	37.8%
2	China	268	29.5%
3	Germany	91	10%
4	Canada	33	3.6%
5	Russia	25	2.8%
6	Japan	19	2.1%
7	Norway	18	2%
8	France	14	1.5%
9	Australia	14	1.5%
10	Singapore	9	1%
11	Netherlands	8	0.9%
12	India	7	0.8%
13	Brazil	5	0.6%
14	Cyprus	5	0.6%
15	United Kingdom	5	0.6%
16	Korea, Republic of	4	0.4%
17	Mexico	4	0.4%
18	Argentina	4	0.4%
19	Hong Kong	4	0.4%
20	Mongolia	3	0.3%
21	Latvia	3	0.3%
22	Philippines	3	0.3%
23	Ukraine	3	0.3%
24	Ireland	2	0.2%
25	Nepal	2	0.2%
26	Chile	2	0.2%
27		2	0.2%
28	Ethiopia	2	0.2%
29	Finland	1	0.1%
30	Georgia	1	0.1%
31	Iran, Islamic Republic of	1	0.1%
32	South Africa	1	0.1%
33	Spain	1	0.1%
34	Taiwan	1	0.1%