Rank	Countries/Territories	Count	Percent
1	United States	377	38.3%
2	China	228	23.2%
3	Germany	67	6.8%
4	France	42	4.3%
5	Japan	36	3.7%
6	Netherlands	26	2.6%
7	Iran, Islamic Republic of	23	2.3%
8	Sweden	23	2.3%
9	United Kingdom	18	1.8%
10	Canada	13	1.3%
11	Russia	12	1.2%
12	Singapore	10	1%
13	India	10	1%
14	Australia	9	0.9%
15	Kazakhstan	9	0.9%
16	Korea, Republic of	9	0.9%
17	Switzerland	7	0.7%
18	South Africa	5	0.5%
19	Israel	5	0.5%
20	Malaysia	4	0.4%
21		4	0.4%
22	Belgium	4	0.4%
23	Hong Kong	4	0.4%
24	Turkey	4	0.4%
25	Taiwan	3	0.3%
26	Ireland	3	0.3%
27	Slovakia	3	0.3%
28	Sri Lanka	2	0.2%
29	Peru	2	0.2%
30	Philippines	2	0.2%
31	Portugal	2	0.2%
32	Qatar	2	0.2%
33	Argentina	2	0.2%
34	Bangladesh	2	0.2%
35	Colombia	2	0.2%
36	Cyprus	2	0.2%
37	Ukraine	2	0.2%
38	Viet Nam	1	0.1%
39	Denmark	1	0.1%
40	Hungary	1	0.1%
41	Mongolia	1	0.1%
42	Spain	1	0.1%
43	Norway	1	0.1%