Rank	Countries/Territories	Count	Percent
1	United States	570	37.6%
2	China	371	24.5%
3	Japan	126	8.3%
4	Germany	92	6.1%
5	Canada	35	2.3%
6	Russia	34	2.2%
7		28	1.8%
8	Cyprus	26	1.7%
9	India	25	1.6%
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	France	13	0.9%
17	Australia	12	0.8%
18	Iran, Islamic Republic of	11	0.7%
19	Italy	9	0.6%
20	Korea, Republic of	9	0.6%
21	Brazil	8	0.5%
22	Czech Republic	4	0.3%
23	Egypt	4	0.3%
24	Colombia	4	0.3%
25	Hong Kong	3	0.2%
26	Qatar	3	0.2%
27	South Africa	3	0.2%
28	Palestine, State of	3	0.2%
29	United Kingdom	3	0.2%
30	Spain	2	0.1%
31	Turkey	2	0.1%
32	Ukraine	2	0.1%
33	Romania	2	0.1%
34	Norway	2	0.1%
35	Malaysia	1	0.1%
36	Mongolia	1	0.1%
37	United Arab Emirates	1	0.1%
38	Iraq	1	0.1%
39	Cuba	1	0.1%