Rank	Countries/Territories	Count	Percent
1	United States	457	39.5%
2	China	287	24.8%
3	Germany	68	5.9%
4	Japan	48	4.1%
5	France	44	3.8%
6	Netherlands	26	2.2%
7	Iran, Islamic Republic of	23	2%
8	Sweden	23	2%
9	United Kingdom	20	1.7%
10	Russia	20	1.7%
11	Canada	16	1.4%
12	Australia	11	0.9%
13	Singapore	11	0.9%
14	India	10	0.9%
15	Kazakhstan	9	0.8%
16	Korea, Republic of	9	0.8%
17	Switzerland	7	0.6%
18	South Africa	6	0.5%
19	Israel	5	0.4%
20	Malaysia	4	0.3%
21	Hong Kong	4	0.3%
22		4	0.3%
23	Argentina	4	0.3%
24	Belgium	4	0.3%
25	Turkey	4	0.3%
26	Taiwan	3	0.3%
27	Cyprus	3	0.3%
28	Ireland	3	0.3%
29	Slovakia	3	0.3%
30	Sri Lanka	2	0.2%
31	Peru	2	0.2%
32	Philippines	2	0.2%
33	Portugal	2	0.2%
34	Qatar	2	0.2%
35	Colombia	2	0.2%
36	Bangladesh	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%