Rank	Countries/Territories	Count	Percent
1	United States	277	43.1%
2	China	168	26.1%
3	Germany	73	11.4%
4	France	25	3.9%
5	Canada	17	2.6%
6	Ukraine	12	1.9%
7	Japan	9	1.4%
8	Philippines	9	1.4%
9	Netherlands	7	1.1%
10	Norway	6	0.9%
11	Cyprus	6	0.9%
12	Singapore	4	0.6%
13	Sweden	3	0.5%
14	United Kingdom	3	0.5%
15	Egypt	3	0.5%
16	Indonesia	2	0.3%
17	Czech Republic	2	0.3%
18	Australia	2	0.3%
19	Poland	2	0.3%
20	Malaysia	2	0.3%
21	Mexico	2	0.3%
22	Uzbekistan	2	0.3%
23	Switzerland	1	0.2%
24	Taiwan	1	0.2%
25	South Africa	1	0.2%
26	Korea, Republic of	1	0.2%
27	Libya	1	0.2%
28	Romania	1	0.2%
29	Israel	1	0.2%