Rank	Countries/Territories	Count	Percent
1	United States	481	53.5%
2	China	180	20%
3	Germany	60	6.7%
4	Taiwan	36	4%
5	France	18	2%
6	Canada	15	1.7%
7	Japan	12	1.3%
8	Norway	10	1.1%
9	Russia	10	1.1%
10	Australia	9	1%
11	Korea, Republic of	8	0.9%
12	India	7	0.8%
13	Cyprus	7	0.8%
14	Spain	6	0.7%
15	Thailand	5	0.6%
16	Ukraine	4	0.4%
17	Greece	4	0.4%
18	Egypt	2	0.2%
19	Argentina	2	0.2%
20	Malaysia	2	0.2%
21	Mexico	2	0.2%
22	Mongolia	2	0.2%
23	Netherlands	2	0.2%
24	Ireland	2	0.2%
25	Poland	2	0.2%
26	Switzerland	2	0.2%
27	Syrian Arab Republic	2	0.2%
28	Singapore	2	0.2%
29	Viet Nam	1	0.1%
30	Saudi Arabia	1	0.1%
31	United Kingdom	1	0.1%
32	Iran, Islamic Republic of	1	0.1%
33	Philippines	1	0.1%