Rank	Countries/Territories	Count	Percent
1	United States	544	47.4%
2	China	254	22.1%
3	Germany	136	11.8%
4	Canada	19	1.7%
5	United Kingdom	19	1.7%
6	France	19	1.7%
7	Japan	18	1.6%
8	Korea, Republic of	18	1.6%
9	Switzerland	17	1.5%
10	India	14	1.2%
11	Netherlands	11	1%
12	Spain	8	0.7%
13	Ukraine	7	0.6%
14	Philippines	6	0.5%
15	Iran, Islamic Republic of	6	0.5%
16	Argentina	6	0.5%
17	Cyprus	5	0.4%
18	Malaysia	5	0.4%
19	Singapore	5	0.4%
20	Russia	3	0.3%
21	Norway	3	0.3%
22	Ireland	3	0.3%
23	Hong Kong	3	0.3%
24	Egypt	3	0.3%
25	Australia	3	0.3%
26	Brazil	2	0.2%
27	Chile	2	0.2%
28	New Zealand	2	0.2%
29	South Africa	2	0.2%
30	Taiwan	1	0.1%
31	Pakistan	1	0.1%
32	Poland	1	0.1%
33	Estonia	1	0.1%
34	Mongolia	1	0.1%