Rank	Countries/Territories	Count	Percent
1	United States	480	39.4%
2	China	285	23.4%
3	Germany	247	20.3%
4	France	51	4.2%
5	Canada	17	1.4%
6	Australia	16	1.3%
7	Russia	11	0.9%
8	United Kingdom	10	0.8%
9	Belgium	10	0.8%
10	Cyprus	10	0.8%
11	Netherlands	10	0.8%
12	Czech Republic	9	0.7%
13	Japan	7	0.6%
14	Hong Kong	7	0.6%
15	Zambia	7	0.6%
16	Singapore	5	0.4%
17	India	4	0.3%
18	Korea, Republic of	4	0.3%
19	Argentina	3	0.2%
20	Poland	3	0.2%
21	Portugal	3	0.2%
22	Taiwan	2	0.2%
23	Thailand	2	0.2%
24	Bangladesh	2	0.2%
25	Mauritius	2	0.2%
26	Norway	2	0.2%
27	Ireland	2	0.2%
28	Hungary	2	0.2%
29	Israel	1	0.1%
30	Turkey	1	0.1%
31	Ukraine	1	0.1%
32	Switzerland	1	0.1%