Rank	Countries/Territories	Count	Percent
1	United States	470	39%
2	China	255	21.1%
3	Germany	139	11.5%
4	Brazil	49	4.1%
5	India	35	2.9%
6	Netherlands	26	2.2%
7	Japan	25	2.1%
8	France	24	2%
9	Canada	20	1.7%
10	Romania	17	1.4%
11	Italy	11	0.9%
12		11	0.9%
13	Spain	9	0.7%
14	Portugal	8	0.7%
15	Iran, Islamic Republic of	8	0.7%
16	Nepal	6	0.5%
17	Sweden	6	0.5%
18	Poland	5	0.4%
19	Ireland	5	0.4%
20	Indonesia	5	0.4%
21	Greece	4	0.3%
22	Angola	4	0.3%
23	Australia	4	0.3%
24	Israel	4	0.3%
25	Korea, Republic of	4	0.3%
26	Morocco	4	0.3%
27	Russia	4	0.3%
28	Thailand	4	0.3%
29	Ukraine	3	0.2%
30	United Kingdom	3	0.2%
31	Singapore	3	0.2%
32	Austria	3	0.2%
33	Cyprus	3	0.2%
34	Belgium	2	0.2%
35	Colombia	2	0.2%
36	Slovenia	2	0.2%
37	South Africa	2	0.2%
38	Lebanon	2	0.2%
39	Viet Nam	2	0.2%
40	Turkey	2	0.2%
41	Switzerland	2	0.2%
42	Taiwan	1	0.1%
43	Malaysia	1	0.1%
44	Mongolia	1	0.1%
45	Norway	1	0.1%
46	Chile	1	0.1%
47	Argentina	1	0.1%
48	Denmark	1	0.1%
49	Ecuador	1	0.1%
50	Estonia	1	0.1%