Rank	Countries/Territories	Count	Percent
1	United States	266	36.6%
2	China	228	31.4%
3	Germany	79	10.9%
4	Japan	28	3.9%
5	Belgium	24	3.3%
6	Singapore	14	1.9%
7	Canada	11	1.5%
8	France	11	1.5%
9	Korea, Republic of	10	1.4%
10	India	9	1.2%
11	Hong Kong	6	0.8%
12	Netherlands	5	0.7%
13	Cyprus	4	0.6%
14	Egypt	3	0.4%
15	Argentina	3	0.4%
16	Australia	3	0.4%
17	Austria	3	0.4%
18	Iran, Islamic Republic of	3	0.4%
19	Italy	3	0.4%
20	Virgin Islands, British	3	0.4%
21	Switzerland	2	0.3%
22	Ukraine	2	0.3%
23	United Kingdom	2	0.3%
24	Malaysia	2	0.3%
25	Bulgaria	1	0.1%
26	Czech Republic	1	0.1%
27	Taiwan	1	0.1%