Rank	Countries/Territories	Count	Percent
1	United States	519	37.6%
2	China	414	30%
3	Germany	139	10.1%
4	France	50	3.6%
5	Canada	29	2.1%
6	Japan	22	1.6%
7	Poland	20	1.4%
8	Czech Republic	20	1.4%
9	Cyprus	19	1.4%
10	United Kingdom	17	1.2%
11	Singapore	16	1.2%
12	India	15	1.1%
13	Australia	9	0.7%
14	Netherlands	8	0.6%
15	Viet Nam	8	0.6%
16	Nigeria	6	0.4%
17	Korea, Republic of	6	0.4%
18	Italy	6	0.4%
19	Hong Kong	6	0.4%
20	Latvia	5	0.4%
21	Russia	5	0.4%
22	Malaysia	4	0.3%
23	Norway	4	0.3%
24	Ireland	4	0.3%
25	Argentina	4	0.3%
26	Hungary	3	0.2%
27	Kazakhstan	3	0.2%
28	Spain	2	0.1%
29	Iran, Islamic Republic of	2	0.1%
30	Belarus	2	0.1%
31	Bulgaria	2	0.1%
32	Nepal	2	0.1%
33	Ukraine	2	0.1%
34	Uzbekistan	1	0.1%
35	Afghanistan	1	0.1%
36	Egypt	1	0.1%
37	Ethiopia	1	0.1%
38	Switzerland	1	0.1%
39	Taiwan	1	0.1%
40	Saudi Arabia	1	0.1%
41	Philippines	1	0.1%
42	Mongolia	1	0.1%