Rank	Countries/Territories	Count	Percent
1	United States	554	44.1%
2	China	301	23.9%
3	Germany	165	13.1%
4	Canada	46	3.7%
5	Israel	45	3.6%
6	France	31	2.5%
7	Bulgaria	22	1.8%
8	Netherlands	14	1.1%
9	United Kingdom	9	0.7%
10	Russia	9	0.7%
11	Japan	8	0.6%
12	Korea, Republic of	6	0.5%
13	Mauritius	5	0.4%
14	Hong Kong	5	0.4%
15	Philippines	4	0.3%
16	Peru	3	0.2%
17	South Africa	3	0.2%
18	Iran, Islamic Republic of	3	0.2%
19	Australia	3	0.2%
20	Finland	3	0.2%
21	Cyprus	3	0.2%
22	Czech Republic	2	0.2%
23	Spain	2	0.2%
24	Nigeria	2	0.2%
25	Singapore	2	0.2%
26	Sweden	1	0.1%
27	Taiwan	1	0.1%
28	Ukraine	1	0.1%
29	Bangladesh	1	0.1%
30	Ireland	1	0.1%
31	Ghana	1	0.1%
32	Moldova, Republic of	1	0.1%