Rank	Countries/Territories	Count	Percent
1	United States	239	31.2%
2	China	238	31.1%
3	Germany	64	8.4%
4	Spain	28	3.7%
5	India	20	2.6%
6	Japan	18	2.3%
7	Canada	17	2.2%
8	Singapore	13	1.7%
9	Ecuador	12	1.6%
10	Russia	11	1.4%
11	Sweden	9	1.2%
12	Netherlands	9	1.2%
13	France	9	1.2%
14	Brazil	9	1.2%
15	Korea, Republic of	8	1%
16	Switzerland	8	1%
17	Mexico	7	0.9%
18	Pakistan	5	0.7%
19	Taiwan	4	0.5%
20	Romania	4	0.5%
21	Cyprus	4	0.5%
22	United Kingdom	4	0.5%
23	Cameroon	3	0.4%
24	Ireland	3	0.4%
25	Indonesia	2	0.3%
26	Iran, Islamic Republic of	2	0.3%
27	Belgium	2	0.3%
28	Colombia	2	0.3%
29	Mongolia	2	0.3%
30	Malaysia	2	0.3%
31	Peru	1	0.1%
32	Philippines	1	0.1%
33	Sri Lanka	1	0.1%
34	Ukraine	1	0.1%
35	Australia	1	0.1%
36	Ethiopia	1	0.1%
37	Hong Kong	1	0.1%
38	Uruguay	1	0.1%