Rank	Countries/Territories	Count	Percent
1	United States	520	38.5%
2	China	458	33.9%
3	Germany	140	10.4%
4	Russia	56	4.1%
5	India	33	2.4%
6	Korea, Republic of	26	1.9%
7	Netherlands	26	1.9%
8	Japan	17	1.3%
9	France	10	0.7%
10	Canada	10	0.7%
11	United Kingdom	8	0.6%
12	Singapore	6	0.4%
13	Austria	5	0.4%
14	Ireland	4	0.3%
15	Cyprus	3	0.2%
16	Egypt	3	0.2%
17	Slovenia	3	0.2%
18	Norway	3	0.2%
19	Ukraine	3	0.2%
20	Qatar	2	0.1%
21	Turkey	2	0.1%
22	Hong Kong	2	0.1%
23	Bulgaria	2	0.1%
24	Argentina	2	0.1%
25	Latvia	2	0.1%
26	Lithuania	1	0.1%
27	Luxembourg	1	0.1%
28	Mongolia	1	0.1%
29	Iran, Islamic Republic of	1	0.1%
30	Spain	1	0.1%