Rank	Countries/Territories	Count	Percent
1	United States	446	38.8%
2	China	259	22.5%
3	Germany	70	6.1%
4	Netherlands	49	4.3%
5	Kazakhstan	39	3.4%
6	India	31	2.7%
7	Australia	31	2.7%
8	United Kingdom	24	2.1%
9	France	22	1.9%
10		21	1.8%
11	Canada	17	1.5%
12	Russia	12	1%
13	Ireland	9	0.8%
14	Italy	9	0.8%
15	Japan	9	0.8%
16	Korea, Republic of	8	0.7%
17	Belgium	8	0.7%
18	Mexico	7	0.6%
19	Norway	6	0.5%
20	Cyprus	6	0.5%
21	Egypt	5	0.4%
22	Indonesia	4	0.3%
23	Argentina	4	0.3%
24	Singapore	4	0.3%
25	South Africa	4	0.3%
26	Switzerland	4	0.3%
27	Turkey	4	0.3%
28	Ukraine	3	0.3%
29	Spain	3	0.3%
30	Poland	3	0.3%
31	Portugal	3	0.3%
32	Malaysia	3	0.3%
33	Philippines	2	0.2%
34	New Zealand	2	0.2%
35	Brazil	2	0.2%
36	Iran, Islamic Republic of	2	0.2%
37	Hong Kong	2	0.2%
38	Denmark	2	0.2%
39	Czech Republic	1	0.1%
40	Chile	1	0.1%
41	Bangladesh	1	0.1%
42	Pakistan	1	0.1%
43	Romania	1	0.1%
44	Malta	1	0.1%
45	Mongolia	1	0.1%
46	Lithuania	1	0.1%
47	Saudi Arabia	1	0.1%
48	Taiwan	1	0.1%