Rank	Countries/Territories	Count	Percent
1	United States	527	36.9%
2	China	336	23.5%
3	Germany	113	7.9%
4	Japan	91	6.4%
5	Argentina	50	3.5%
6	Canada	32	2.2%
7	Spain	32	2.2%
8	United Kingdom	31	2.2%
9	Singapore	24	1.7%
10	France	19	1.3%
11	India	18	1.3%
12	Norway	15	1.1%
13	Romania	14	1%
14	Iran, Islamic Republic of	12	0.8%
15	Korea, Republic of	11	0.8%
16	Netherlands	10	0.7%
17	Australia	9	0.6%
18	Cyprus	8	0.6%
19	Turkey	8	0.6%
20	Sweden	7	0.5%
21	Malaysia	7	0.5%
22	Egypt	6	0.4%
23	Austria	6	0.4%
24	Indonesia	6	0.4%
25	Poland	5	0.4%
26	Ukraine	5	0.4%
27	Taiwan	4	0.3%
28	Croatia	3	0.2%
29	Belgium	2	0.1%
30	Brazil	2	0.1%
31	Slovakia	2	0.1%
32	South Africa	2	0.1%
33	Mexico	2	0.1%
34	Hong Kong	2	0.1%
35	Viet Nam	1	0.1%
36	New Zealand	1	0.1%
37	Russia	1	0.1%
38	Saudi Arabia	1	0.1%
39	Ireland	1	0.1%
40	Greece	1	0.1%