Rank	Countries/Territories	Count	Percent
1	United States	641	52.8%
2	China	266	21.9%
3	Germany	88	7.3%
4	Canada	44	3.6%
5	France	38	3.1%
6	Korea, Republic of	23	1.9%
7	Netherlands	13	1.1%
8		12	1%
9	India	9	0.7%
10	Japan	9	0.7%
11	Russia	9	0.7%
12	United Kingdom	5	0.4%
13	Hong Kong	5	0.4%
14	Cyprus	5	0.4%
15	Egypt	4	0.3%
16	Australia	4	0.3%
17	Indonesia	3	0.2%
18	Israel	3	0.2%
19	Singapore	3	0.2%
20	Portugal	3	0.2%
21	Malaysia	2	0.2%
22	Serbia	2	0.2%
23	Spain	2	0.2%
24	Sweden	2	0.2%
25	Tanzania, United Republic of	2	0.2%
26	Tunisia	2	0.2%
27	Ukraine	2	0.2%
28	Hungary	2	0.2%
29	Guatemala	2	0.2%
30	Bangladesh	2	0.2%
31	Bulgaria	2	0.2%
32	Lithuania	1	0.1%
33	Viet Nam	1	0.1%
34	Yemen	1	0.1%
35	South Africa	1	0.1%