Rank	Countries/Territories	Count	Percent
1	United States	341	47.8%
2	China	192	26.9%
3	Germany	67	9.4%
4	France	16	2.2%
5	Japan	15	2.1%
6	Spain	11	1.5%
7	Taiwan	10	1.4%
8	Singapore	10	1.4%
9	Korea, Republic of	8	1.1%
10	Netherlands	7	1%
11	Russia	6	0.8%
12	Malaysia	4	0.6%
13	Hong Kong	4	0.6%
14	India	4	0.6%
15	Argentina	3	0.4%
16	Mongolia	3	0.4%
17	South Africa	3	0.4%
18	Canada	2	0.3%
19	Australia	2	0.3%
20	Iran, Islamic Republic of	2	0.3%
21	Belgium	1	0.1%
22	Cyprus	1	0.1%
23	Egypt	1	0.1%
24	Ukraine	1	0.1%