Rank	Countries/Territories	Count	Percent
1	United States	577	33.8%
2	China	555	32.6%
3	Germany	119	7%
4	Korea, Republic of	73	4.3%
5	United Kingdom	42	2.5%
6	India	40	2.3%
7		40	2.3%
8	Italy	38	2.2%
9	Canada	25	1.5%
10	Netherlands	20	1.2%
11	Japan	11	0.6%
12	Taiwan	11	0.6%
13	Thailand	10	0.6%
14	Belgium	10	0.6%
15	Ireland	9	0.5%
16	Sweden	9	0.5%
17	Ukraine	9	0.5%
18	Senegal	8	0.5%
19	Cyprus	8	0.5%
20	Indonesia	7	0.4%
21	Hong Kong	7	0.4%
22	Brazil	7	0.4%
23	Australia	7	0.4%
24	France	7	0.4%
25	Turkey	7	0.4%
26	Singapore	6	0.4%
27	Iran, Islamic Republic of	6	0.4%
28	Denmark	5	0.3%
29	Hungary	4	0.2%
30	Romania	4	0.2%
31	Philippines	3	0.2%
32	Russia	2	0.1%
33	Peru	2	0.1%
34	Mexico	2	0.1%
35	Colombia	2	0.1%
36	Austria	2	0.1%
37	Bangladesh	2	0.1%
38	Chile	2	0.1%
39	Viet Nam	2	0.1%
40	Albania	1	0.1%
41	Saudi Arabia	1	0.1%
42	Slovakia	1	0.1%
43	Spain	1	0.1%
44	Sri Lanka	1	0.1%