Rank	Countries/Territories	Count	Percent
1	United States	672	46.2%
2	China	337	23.1%
3	Germany	169	11.6%
4	France	40	2.7%
5	Canada	22	1.5%
6	Korea, Republic of	20	1.4%
7	Japan	19	1.3%
8	United Kingdom	19	1.3%
9	Switzerland	17	1.2%
10	India	15	1%
11	Netherlands	13	0.9%
12	Argentina	10	0.7%
13	Spain	9	0.6%
14	Singapore	9	0.6%
15	Hong Kong	8	0.5%
16	Ukraine	8	0.5%
17	Malaysia	6	0.4%
18	Cyprus	6	0.4%
19	Iran, Islamic Republic of	6	0.4%
20	Philippines	6	0.4%
21	Ireland	5	0.3%
22	Australia	5	0.3%
23	Norway	4	0.3%
24	Romania	4	0.3%
25	Russia	3	0.2%
26	Taiwan	3	0.2%
27	Egypt	3	0.2%
28	Mexico	3	0.2%
29	Brazil	3	0.2%
30	Bangladesh	2	0.1%
31	Chile	2	0.1%
32	South Africa	2	0.1%
33	New Zealand	2	0.1%
34	Pakistan	1	0.1%
35	Poland	1	0.1%
36	Estonia	1	0.1%
37	Mongolia	1	0.1%