Rank	Countries/Territories	Count	Percent
1	United States	261	24.8%
2	China	155	14.7%
3	Japan	155	14.7%
4	Canada	106	10.1%
5	Germany	68	6.5%
6	Singapore	35	3.3%
7	Netherlands	27	2.6%
8	United Kingdom	27	2.6%
9	Bulgaria	21	2%
10	Korea, Republic of	20	1.9%
11	Spain	18	1.7%
12	France	14	1.3%
13	Italy	13	1.2%
14	Ireland	12	1.1%
15	Australia	11	1%
16	Poland	10	1%
17	Turkey	9	0.9%
18	Romania	8	0.8%
19	Russia	8	0.8%
20	Benin	7	0.7%
21	Portugal	5	0.5%
22	Nigeria	5	0.5%
23	Ukraine	5	0.5%
24	Kenya	4	0.4%
25	Slovenia	4	0.4%
26	South Africa	4	0.4%
27	Cote D'ivoire	4	0.4%
28	Israel	4	0.4%
29	Iran, Islamic Republic of	4	0.4%
30	Greece	4	0.4%
31	Norway	3	0.3%
32	Pakistan	2	0.2%
33	Lithuania	2	0.2%
34	Hong Kong	2	0.2%
35	India	2	0.2%
36	Austria	2	0.2%
37	Belgium	2	0.2%
38	Brazil	1	0.1%
39	Egypt	1	0.1%
40	Mauritius	1	0.1%
41	Mexico	1	0.1%
42	Philippines	1	0.1%
43	Latvia	1	0.1%
44	Sweden	1	0.1%
45	Togo	1	0.1%