Rank	Countries/Territories	Count	Percent
1	United States	563	37.6%
2	China	371	24.7%
3	Japan	126	8.4%
4	Germany	92	6.1%
5	Canada	35	2.3%
6	Russia	34	2.3%
7		28	1.9%
8	India	25	1.7%
9	Cyprus	23	1.5%
10	Ireland	20	1.3%
11	Netherlands	20	1.3%
12	Singapore	19	1.3%
13	Taiwan	17	1.1%
14	Peru	16	1.1%
15	Belgium	14	0.9%
16	Australia	12	0.8%
17	France	12	0.8%
18	Iran, Islamic Republic of	11	0.7%
19	Korea, Republic of	9	0.6%
20	Brazil	8	0.5%
21	Czech Republic	4	0.3%
22	Egypt	4	0.3%
23	Italy	4	0.3%
24	Hong Kong	3	0.2%
25	Qatar	3	0.2%
26	South Africa	3	0.2%
27	Palestine, State of	3	0.2%
28	United Kingdom	3	0.2%
29	Spain	2	0.1%
30	Turkey	2	0.1%
31	Ukraine	2	0.1%
32	Romania	2	0.1%
33	Norway	2	0.1%
34	Colombia	2	0.1%
35	Cuba	1	0.1%
36	Iraq	1	0.1%
37	Malaysia	1	0.1%
38	Mongolia	1	0.1%
39	United Arab Emirates	1	0.1%