Rank	Countries/Territories	Count	Percent
1	United States	305	25.2%
2	China	233	19.3%
3	Romania	85	7%
4	Germany	83	6.9%
5	India	80	6.6%
6	Russia	60	5%
7	Netherlands	51	4.2%
8	Korea, Republic of	36	3%
9	Japan	26	2.2%
10	France	23	1.9%
11	Denmark	21	1.7%
12	Spain	21	1.7%
13	Canada	19	1.6%
14	Italy	18	1.5%
15	United Kingdom	16	1.3%
16	Belgium	15	1.2%
17	Argentina	8	0.7%
18	Turkey	8	0.7%
19	Sweden	7	0.6%
20	Indonesia	7	0.6%
21	Iran, Islamic Republic of	7	0.6%
22	Ireland	6	0.5%
23	Lebanon	6	0.5%
24	Pakistan	6	0.5%
25	Thailand	6	0.5%
26	Taiwan	4	0.3%
27	Nigeria	4	0.3%
28	Hong Kong	4	0.3%
29	Mexico	3	0.2%
30	Norway	3	0.2%
31	Poland	3	0.2%
32	Ukraine	3	0.2%
33	Singapore	2	0.2%
34	Viet Nam	2	0.2%
35	Yemen	2	0.2%
36	Paraguay	2	0.2%
37	Philippines	2	0.2%
38	Saudi Arabia	2	0.2%
39	Mozambique	2	0.2%
40	Georgia	2	0.2%
41	Greece	2	0.2%
42	Austria	2	0.2%
43	Benin	2	0.2%
44	Brazil	2	0.2%
45	Egypt	2	0.2%
46	Cyprus	2	0.2%
47	Ethiopia	1	0.1%
48	Bangladesh	1	0.1%
49	Serbia	1	0.1%
50	Portugal	1	0.1%