Rank	Countries/Territories	Count	Percent
1	United States	414	31.4%
2	China	412	31.2%
3	Germany	147	11.1%
4	France	68	5.2%
5	Canada	41	3.1%
6	Korea, Republic of	28	2.1%
7	Japan	22	1.7%
8	Brazil	21	1.6%
9	Denmark	19	1.4%
10		16	1.2%
11	Italy	15	1.1%
12	Taiwan	13	1%
13	United Kingdom	11	0.8%
14	Singapore	11	0.8%
15	Netherlands	10	0.8%
16	Ukraine	8	0.6%
17	Cyprus	8	0.6%
18	Argentina	7	0.5%
19	Portugal	7	0.5%
20	Australia	5	0.4%
21	Ireland	4	0.3%
22	India	4	0.3%
23	Latvia	4	0.3%
24	Tunisia	3	0.2%
25	Hong Kong	3	0.2%
26	Czech Republic	3	0.2%
27	Malaysia	2	0.2%
28	Viet Nam	2	0.2%
29	Romania	2	0.2%
30	Sweden	2	0.2%
31	Switzerland	1	0.1%
32	Russia	1	0.1%
33	Malawi	1	0.1%
34	Pakistan	1	0.1%
35	Thailand	1	0.1%
36	Iran, Islamic Republic of	1	0.1%
37	Kazakhstan	1	0.1%