Rank	Countries/Territories	Count	Percent
1	United States	579	36.3%
2	China	573	35.9%
3	Germany	120	7.5%
4	Ireland	40	2.5%
5	France	32	2%
6	Japan	25	1.6%
7	Canada	22	1.4%
8	Netherlands	20	1.3%
9	Singapore	20	1.3%
10	Russia	19	1.2%
11	Brazil	16	1%
12	Ukraine	14	0.9%
13	Hong Kong	12	0.8%
14	United Kingdom	10	0.6%
15	Chile	8	0.5%
16	Taiwan	8	0.5%
17	Iran, Islamic Republic of	7	0.4%
18	Norway	7	0.4%
19	Mexico	7	0.4%
20	Australia	7	0.4%
21	India	7	0.4%
22	Argentina	5	0.3%
23	Cyprus	5	0.3%
24	Israel	3	0.2%
25	Italy	3	0.2%
26	Thailand	3	0.2%
27	Spain	2	0.1%
28	Korea, Republic of	2	0.1%
29	Malaysia	2	0.1%
30	Egypt	2	0.1%
31	Bangladesh	2	0.1%
32	Viet Nam	2	0.1%
33	Switzerland	2	0.1%
34	Bulgaria	1	0.1%
35	Indonesia	1	0.1%
36	Moldova, Republic of	1	0.1%
37	Mongolia	1	0.1%
38	Philippines	1	0.1%
39	Portugal	1	0.1%
40	Sweden	1	0.1%
41	Turkey	1	0.1%
42	Turkmenistan	1	0.1%