Rank	Countries/Territories	Count	Percent
1	United States	592	39.3%
2	China	539	35.8%
3	Germany	150	10%
4	France	59	3.9%
5	Japan	43	2.9%
6	Canada	24	1.6%
7	Netherlands	20	1.3%
8	Singapore	13	0.9%
9	Ukraine	7	0.5%
10	Cyprus	7	0.5%
11	Russia	5	0.3%
12	Spain	5	0.3%
13	Korea, Republic of	4	0.3%
14	United Kingdom	4	0.3%
15	Hong Kong	4	0.3%
16	India	4	0.3%
17	Iran, Islamic Republic of	3	0.2%
18	Ireland	3	0.2%
19	Czech Republic	3	0.2%
20	Argentina	3	0.2%
21	Djibouti	2	0.1%
22	Indonesia	2	0.1%
23	Switzerland	2	0.1%
24	Turkey	2	0.1%
25	Latvia	1	0.1%
26	New Zealand	1	0.1%
27	Romania	1	0.1%
28	Bahamas	1	0.1%
29	Brazil	1	0.1%
30	Bulgaria	1	0.1%