Rank	Countries/Territories	Count	Percent
1	United States	359	41.8%
2	China	270	31.4%
3	Germany	64	7.5%
4	Canada	25	2.9%
5	Netherlands	22	2.6%
6	Japan	16	1.9%
7	Australia	16	1.9%
8	Bulgaria	16	1.9%
9	Cyprus	8	0.9%
10	France	7	0.8%
11	Latvia	6	0.7%
12	Iran, Islamic Republic of	6	0.7%
13	Singapore	6	0.7%
14	Philippines	4	0.5%
15	United Kingdom	4	0.5%
16	Egypt	4	0.5%
17	Bangladesh	3	0.3%
18	Mauritius	3	0.3%
19	Pakistan	2	0.2%
20	India	2	0.2%
21	Poland	2	0.2%
22	Russia	2	0.2%
23	Saudi Arabia	2	0.2%
24	Switzerland	2	0.2%
25	Turkey	2	0.2%
26	Ukraine	1	0.1%
27	Viet Nam	1	0.1%
28	Iraq	1	0.1%
29	Palestine, State of	1	0.1%
30	Brazil	1	0.1%
31	Argentina	1	0.1%