Rank	Countries/Territories	Count	Percent
1	United States	327	37.8%
2	China	266	30.8%
3	Germany	102	11.8%
4	France	37	4.3%
5	Canada	24	2.8%
6	Japan	18	2.1%
7	Portugal	14	1.6%
8	Ukraine	13	1.5%
9	Australia	11	1.3%
10	Lithuania	10	1.2%
11	Singapore	8	0.9%
12	Korea, Republic of	7	0.8%
13	Netherlands	4	0.5%
14	Argentina	3	0.3%
15	Peru	3	0.3%
16	Cyprus	2	0.2%
17	Ecuador	2	0.2%
18	Malaysia	2	0.2%
19	Mexico	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Italy	1	0.1%
22	Norway	1	0.1%
23	Hong Kong	1	0.1%
24	India	1	0.1%
25	Bangladesh	1	0.1%
26	Bulgaria	1	0.1%
27	United Kingdom	1	0.1%