Rank	Countries/Territories	Count	Percent
1	United States	525	39.2%
2	China	360	26.9%
3	Germany	130	9.7%
4	Russia	76	5.7%
5	Canada	41	3.1%
6	Australia	30	2.2%
7	France	27	2%
8	Japan	20	1.5%
9	Netherlands	19	1.4%
10	Singapore	16	1.2%
11	Spain	10	0.7%
12	Italy	9	0.7%
13	Hong Kong	8	0.6%
14	United Kingdom	7	0.5%
15	Czech Republic	6	0.4%
16	Ireland	6	0.4%
17	India	5	0.4%
18	Cyprus	4	0.3%
19	Switzerland	4	0.3%
20	Thailand	3	0.2%
21	Portugal	3	0.2%
22	Brazil	3	0.2%
23	Austria	3	0.2%
24	Denmark	3	0.2%
25	Iran, Islamic Republic of	2	0.1%
26	Bangladesh	2	0.1%
27	Argentina	2	0.1%
28	Israel	2	0.1%
29	Korea, Republic of	2	0.1%
30	Lebanon	2	0.1%
31	Malaysia	2	0.1%
32	United Arab Emirates	2	0.1%
33	Mongolia	1	0.1%
34	Romania	1	0.1%
35	Ukraine	1	0.1%
36	Sweden	1	0.1%
37	Belgium	1	0.1%
38	Georgia	1	0.1%