Rank	Countries/Territories	Count	Percent
1	United States	446	44.2%
2	China	262	26%
3	Germany	108	10.7%
4	Russia	31	3.1%
5	Netherlands	16	1.6%
6	Canada	16	1.6%
7	France	16	1.6%
8	Singapore	13	1.3%
9	South Africa	12	1.2%
10	Japan	10	1%
11	Lithuania	10	1%
12	Korea, Republic of	8	0.8%
13	Hong Kong	8	0.8%
14	Czech Republic	8	0.8%
15	Cyprus	6	0.6%
16	Iran, Islamic Republic of	6	0.6%
17	Malaysia	4	0.4%
18	Argentina	4	0.4%
19	Ukraine	4	0.4%
20	United Kingdom	3	0.3%
21	Spain	3	0.3%
22	Australia	3	0.3%
23	Bangladesh	2	0.2%
24	Mongolia	2	0.2%
25	Ireland	2	0.2%
26	Switzerland	2	0.2%
27	Norway	2	0.2%
28	India	1	0.1%
29	Ethiopia	1	0.1%