Rank	Countries/Territories	Count	Percent
1	United States	817	44.9%
2	China	555	30.5%
3	Romania	67	3.7%
4	Germany	59	3.2%
5	India	36	2%
6	Australia	35	1.9%
7	Japan	27	1.5%
8	France	22	1.2%
9	United Kingdom	20	1.1%
10	Canada	18	1%
11	Netherlands	17	0.9%
12	Russia	14	0.8%
13	Korea, Republic of	14	0.8%
14	Singapore	14	0.8%
15	Latvia	10	0.5%
16	Ireland	10	0.5%
17	Philippines	10	0.5%
18	Hong Kong	8	0.4%
19	Portugal	7	0.4%
20	Norway	6	0.3%
21	Austria	5	0.3%
22	Taiwan	5	0.3%
23	Viet Nam	4	0.2%
24	Switzerland	4	0.2%
25	Brazil	4	0.2%
26	Czech Republic	4	0.2%
27	Chile	3	0.2%
28	Iran, Islamic Republic of	3	0.2%
29	Mongolia	3	0.2%
30	Saudi Arabia	2	0.1%
31	Malaysia	2	0.1%
32	Denmark	2	0.1%
33	Cyprus	2	0.1%
34	Sweden	2	0.1%
35	Ukraine	2	0.1%
36	Spain	1	0.1%
37	Finland	1	0.1%
38	Argentina	1	0.1%
39	Bulgaria	1	0.1%
40	Bahrain	1	0.1%
41	Bangladesh	1	0.1%
42	Italy	1	0.1%
43	Indonesia	1	0.1%