Rank	Countries/Territories	Count	Percent
1	United States	408	33.4%
2	China	322	26.3%
3	Russia	82	6.7%
4	Germany	71	5.8%
5	Netherlands	46	3.8%
6	Japan	37	3%
7	Australia	30	2.5%
8	Canada	22	1.8%
9	Korea, Republic of	21	1.7%
10	Portugal	19	1.6%
11	United Kingdom	19	1.6%
12	Poland	18	1.5%
13	France	14	1.1%
14	India	11	0.9%
15	Taiwan	11	0.9%
16	Switzerland	8	0.7%
17	Ireland	8	0.7%
18	Norway	8	0.7%
19	Kazakhstan	7	0.6%
20	Hong Kong	5	0.4%
21	Brazil	5	0.4%
22	Bangladesh	5	0.4%
23	Turkey	5	0.4%
24	Belgium	4	0.3%
25	Cyprus	4	0.3%
26	Mexico	4	0.3%
27	Singapore	3	0.2%
28	South Africa	3	0.2%
29	Israel	3	0.2%
30	Denmark	3	0.2%
31	Belarus	2	0.2%
32	Iran, Islamic Republic of	2	0.2%
33	Pakistan	2	0.2%
34	Ukraine	2	0.2%
35	Zambia	1	0.1%
36	Moldova, Republic of	1	0.1%
37	Italy	1	0.1%
38	Malaysia	1	0.1%
39	Argentina	1	0.1%
40	Armenia	1	0.1%
41	Cambodia	1	0.1%
42	Egypt	1	0.1%
43	Georgia	1	0.1%