Rank	Countries/Territories	Count	Percent
1	United States	501	38.6%
2	China	338	26.1%
3	Germany	157	12.1%
4	Poland	45	3.5%
5	India	31	2.4%
6	Korea, Republic of	23	1.8%
7	Canada	22	1.7%
8	Iran, Islamic Republic of	21	1.6%
9	Netherlands	14	1.1%
10	Singapore	14	1.1%
11	France	12	0.9%
12	Japan	10	0.8%
13	Russia	9	0.7%
14	Nepal	9	0.7%
15	Ireland	9	0.7%
16	Australia	9	0.7%
17	Cyprus	7	0.5%
18	Norway	7	0.5%
19	United Kingdom	5	0.4%
20	Turkey	4	0.3%
21	Viet Nam	4	0.3%
22	Kenya	4	0.3%
23	Philippines	4	0.3%
24	Spain	4	0.3%
25	Ecuador	4	0.3%
26	Azerbaijan	4	0.3%
27	Pakistan	3	0.2%
28	New Zealand	2	0.2%
29	Lebanon	2	0.2%
30	Switzerland	2	0.2%
31	Taiwan	2	0.2%
32	Belarus	2	0.2%
33	Denmark	2	0.2%
34	Italy	2	0.2%
35	Indonesia	2	0.2%
36	South Africa	2	0.2%
37	Belgium	1	0.1%
38	Argentina	1	0.1%
39	Costa Rica	1	0.1%
40	Thailand	1	0.1%
41	Mexico	1	0.1%