Rank	Countries/Territories	Count	Percent
1	United States	397	43.1%
2	China	342	37.1%
3	Germany	47	5.1%
4	Japan	24	2.6%
5	Singapore	14	1.5%
6	France	13	1.4%
7	Russia	11	1.2%
8	Pakistan	8	0.9%
9	Korea, Republic of	8	0.9%
10	India	7	0.8%
11	United Kingdom	7	0.8%
12	Ukraine	6	0.7%
13	Australia	6	0.7%
14	Netherlands	5	0.5%
15	Malaysia	4	0.4%
16	Kazakhstan	3	0.3%
17	Cyprus	3	0.3%
18	Argentina	2	0.2%
19	Iran, Islamic Republic of	2	0.2%
20	Italy	2	0.2%
21	Hong Kong	2	0.2%
22	Turkey	2	0.2%
23	Viet Nam	1	0.1%
24	Switzerland	1	0.1%
25	Taiwan	1	0.1%
26	Mongolia	1	0.1%
27	Greece	1	0.1%
28	Brazil	1	0.1%
29	Canada	1	0.1%