Rank	Countries/Territories	Count	Percent
1	United States	592	42.9%
2	China	465	33.7%
3	Germany	105	7.6%
4	France	44	3.2%
5	Singapore	22	1.6%
6	Japan	18	1.3%
7	Netherlands	15	1.1%
8	Norway	14	1%
9	Canada	14	1%
10	Australia	13	0.9%
11	Korea, Republic of	7	0.5%
12	Cyprus	7	0.5%
13	Russia	7	0.5%
14	Sri Lanka	7	0.5%
15	United Kingdom	5	0.4%
16	Ukraine	3	0.2%
17	South Africa	3	0.2%
18	Spain	3	0.2%
19	Iran, Islamic Republic of	3	0.2%
20	Latvia	3	0.2%
21	Luxembourg	3	0.2%
22	Argentina	3	0.2%
23	Bangladesh	2	0.1%
24	Hong Kong	2	0.1%
25	Malaysia	2	0.1%
26	Mexico	2	0.1%
27	Poland	2	0.1%
28	Romania	2	0.1%
29	Taiwan	2	0.1%
30	Turkey	2	0.1%
31	Sweden	1	0.1%
32	Switzerland	1	0.1%
33	Mongolia	1	0.1%
34	Iraq	1	0.1%
35	Italy	1	0.1%
36	India	1	0.1%
37	Indonesia	1	0.1%