Rank	Countries/Territories	Count	Percent
1	United States	458	57.2%
2	China	144	18%
3	Germany	76	9.5%
4	Korea, Republic of	23	2.9%
5	France	22	2.8%
6	Netherlands	10	1.2%
7	Canada	8	1%
8	Japan	7	0.9%
9	India	7	0.9%
10		6	0.8%
11	Russia	5	0.6%
12	Australia	4	0.5%
13	Cyprus	4	0.5%
14	Singapore	3	0.4%
15	Spain	2	0.2%
16	Tanzania, United Republic of	2	0.2%
17	Tunisia	2	0.2%
18	Egypt	2	0.2%
19	Bangladesh	2	0.2%
20	Guatemala	2	0.2%
21	Serbia	2	0.2%
22	Malaysia	2	0.2%
23	Indonesia	1	0.1%
24	Israel	1	0.1%
25	Lithuania	1	0.1%
26	Hong Kong	1	0.1%
27	South Africa	1	0.1%
28	Viet Nam	1	0.1%
29	Yemen	1	0.1%