Rank	Countries/Territories	Count	Percent
1	United States	443	36.1%
2	China	343	28%
3	Germany	163	13.3%
4	Czech Republic	70	5.7%
5	India	40	3.3%
6	Japan	30	2.4%
7	Netherlands	16	1.3%
8	Singapore	12	1%
9	Senegal	9	0.7%
10	Canada	8	0.7%
11	Romania	8	0.7%
12	Malaysia	8	0.7%
13	Uzbekistan	7	0.6%
14	Australia	7	0.6%
15	Greece	5	0.4%
16	Ireland	5	0.4%
17	Taiwan	5	0.4%
18	Mauritius	4	0.3%
19	Poland	4	0.3%
20	Korea, Republic of	4	0.3%
21	Hong Kong	4	0.3%
22	Indonesia	3	0.2%
23	Mexico	3	0.2%
24	Mongolia	2	0.2%
25	Sweden	2	0.2%
26	Israel	2	0.2%
27	Lebanon	2	0.2%
28	Libya	2	0.2%
29	Ecuador	2	0.2%
30	Cyprus	2	0.2%
31	United Kingdom	2	0.2%
32	Bangladesh	1	0.1%
33	Egypt	1	0.1%
34	Latvia	1	0.1%
35	Italy	1	0.1%
36	Turkey	1	0.1%
37	Ukraine	1	0.1%
38	Viet Nam	1	0.1%
39	Russia	1	0.1%
40	Saudi Arabia	1	0.1%