Rank	Countries/Territories	Count	Percent
1	United States	371	43.1%
2	China	155	18%
3	Germany	68	7.9%
4	Japan	49	5.7%
5	United Kingdom	28	3.3%
6	Romania	25	2.9%
7	Russia	22	2.6%
8	Netherlands	14	1.6%
9	Switzerland	11	1.3%
10	Canada	11	1.3%
11	Australia	10	1.2%
12	Korea, Republic of	10	1.2%
13	France	9	1%
14	Spain	9	1%
15	Sweden	9	1%
16	Singapore	9	1%
17	Iran, Islamic Republic of	7	0.8%
18	India	4	0.5%
19	Cyprus	4	0.5%
20	Italy	4	0.5%
21	Turkey	4	0.5%
22	Taiwan	3	0.3%
23	United Arab Emirates	2	0.2%
24	Portugal	2	0.2%
25	New Zealand	2	0.2%
26	South Africa	2	0.2%
27	Denmark	2	0.2%
28	Finland	2	0.2%
29	Hong Kong	2	0.2%
30	Iraq	2	0.2%
31	Ireland	1	0.1%
32	Costa Rica	1	0.1%
33	Cuba	1	0.1%
34	Brazil	1	0.1%
35	Argentina	1	0.1%
36	Poland	1	0.1%
37	Ukraine	1	0.1%
38	Viet Nam	1	0.1%