Rank	Countries/Territories	Count	Percent
1	United States	576	46.9%
2	China	311	25.3%
3	Germany	120	9.8%
4	Singapore	41	3.3%
5	Canada	31	2.5%
6	Japan	28	2.3%
7	Netherlands	23	1.9%
8	France	19	1.5%
9	United Kingdom	15	1.2%
10	Cyprus	8	0.7%
11	Australia	7	0.6%
12	Korea, Republic of	7	0.6%
13	Argentina	6	0.5%
14	India	5	0.4%
15	Thailand	4	0.3%
16	Ukraine	3	0.2%
17	Latvia	3	0.2%
18	Hong Kong	3	0.2%
19	Hungary	2	0.2%
20	Malaysia	2	0.2%
21	Mongolia	2	0.2%
22	Taiwan	2	0.2%
23	Philippines	2	0.2%
24	Russia	2	0.2%
25	Switzerland	1	0.1%
26	Viet Nam	1	0.1%
27	Iran, Islamic Republic of	1	0.1%
28	Ireland	1	0.1%
29	Luxembourg	1	0.1%
30	Bulgaria	1	0.1%