Rank	Countries/Territories	Count	Percent
1	United States	393	43.2%
2	China	316	34.8%
3	Germany	61	6.7%
4	France	33	3.6%
5	India	20	2.2%
6	Singapore	14	1.5%
7	Switzerland	11	1.2%
8	Canada	9	1%
9	Australia	8	0.9%
10	Cyprus	7	0.8%
11	Netherlands	7	0.8%
12	Japan	6	0.7%
13	Russia	5	0.6%
14	Argentina	3	0.3%
15	Mongolia	3	0.3%
16	Turkey	2	0.2%
17	Viet Nam	2	0.2%
18	Bulgaria	2	0.2%
19	Korea, Republic of	2	0.2%
20	Ireland	2	0.2%
21	Sweden	1	0.1%
22	Brazil	1	0.1%
23	United Kingdom	1	0.1%