Rank	Countries/Territories	Count	Percent
1	United States	474	31.6%
2	China	451	30.1%
3	Germany	89	5.9%
4	Russia	84	5.6%
5	Netherlands	48	3.2%
6	Japan	41	2.7%
7	France	34	2.3%
8	Australia	32	2.1%
9	Canada	29	1.9%
10	Korea, Republic of	24	1.6%
11	United Kingdom	21	1.4%
12	Portugal	19	1.3%
13	Poland	18	1.2%
14	Taiwan	13	0.9%
15	India	11	0.7%
16	Switzerland	10	0.7%
17	Ireland	8	0.5%
18	Norway	8	0.5%
19	Hong Kong	8	0.5%
20	Cyprus	7	0.5%
21	Mexico	7	0.5%
22	Kazakhstan	7	0.5%
23	Brazil	6	0.4%
24	Bangladesh	5	0.3%
25	Turkey	5	0.3%
26	Belgium	4	0.3%
27	Denmark	3	0.2%
28	Malaysia	3	0.2%
29	Israel	3	0.2%
30	Ukraine	3	0.2%
31	Singapore	3	0.2%
32	South Africa	3	0.2%
33	Sweden	2	0.1%
34	Iran, Islamic Republic of	2	0.1%
35	Pakistan	2	0.1%
36	Philippines	2	0.1%
37	Belarus	2	0.1%
38	Argentina	1	0.1%
39	Armenia	1	0.1%
40	Cambodia	1	0.1%
41	Egypt	1	0.1%
42	Georgia	1	0.1%
43	Moldova, Republic of	1	0.1%
44	Italy	1	0.1%
45	Viet Nam	1	0.1%
46	Zambia	1	0.1%