Rank	Countries/Territories	Count	Percent
1	United States	235	30.8%
2	China	161	21.1%
3	Germany	118	15.5%
4	Russia	22	2.9%
5	France	20	2.6%
6	Netherlands	19	2.5%
7	Turkey	15	2%
8	India	14	1.8%
9	United Kingdom	13	1.7%
10	Spain	12	1.6%
11	Australia	12	1.6%
12	Iran, Islamic Republic of	11	1.4%
13	Japan	10	1.3%
14	Hungary	8	1%
15	Italy	7	0.9%
16	Canada	7	0.9%
17	Ireland	6	0.8%
18	Singapore	6	0.8%
19	Egypt	5	0.7%
20	Czech Republic	4	0.5%
21	Belgium	4	0.5%
22	Mexico	4	0.5%
23	Taiwan	4	0.5%
24	Romania	4	0.5%
25	Israel	3	0.4%
26	Cyprus	3	0.4%
27	Hong Kong	2	0.3%
28	Brazil	2	0.3%
29	Bulgaria	2	0.3%
30	Bangladesh	2	0.3%
31	Chile	2	0.3%
32	Colombia	2	0.3%
33	Iraq	2	0.3%
34	Korea, Republic of	2	0.3%
35	Norway	2	0.3%
36	Pakistan	2	0.3%
37	Ukraine	2	0.3%
38	Thailand	2	0.3%
39	Saudi Arabia	2	0.3%
40	South Africa	1	0.1%
41	Trinidad and Tobago	1	0.1%
42	Switzerland	1	0.1%
43	Peru	1	0.1%
44	Philippines	1	0.1%
45	Portugal	1	0.1%
46	Malaysia	1	0.1%
47	Mongolia	1	0.1%
48	Jordan	1	0.1%
49	Indonesia	1	0.1%