Rank	Countries/Territories	Count	Percent
1	United States	564	38.1%
2	China	502	33.9%
3	Germany	108	7.3%
4	India	77	5.2%
5	Japan	21	1.4%
6	Canada	17	1.1%
7	Denmark	15	1%
8	Netherlands	14	0.9%
9	Norway	14	0.9%
10	Taiwan	13	0.9%
11	Italy	10	0.7%
12	Hong Kong	10	0.7%
13	Australia	10	0.7%
14	Brazil	8	0.5%
15	Turkey	8	0.5%
16	Belgium	7	0.5%
17	Indonesia	7	0.5%
18	Iran, Islamic Republic of	7	0.5%
19	Russia	6	0.4%
20	Singapore	6	0.4%
21	Sweden	6	0.4%
22	United Kingdom	6	0.4%
23	Spain	5	0.3%
24	France	4	0.3%
25	Korea, Republic of	4	0.3%
26	Latvia	3	0.2%
27	Romania	3	0.2%
28	Serbia	3	0.2%
29	Ukraine	3	0.2%
30	Bangladesh	3	0.2%
31	Colombia	2	0.1%
32	Cyprus	2	0.1%
33	Ireland	2	0.1%
34	Ecuador	2	0.1%
35	Thailand	2	0.1%
36	Tunisia	2	0.1%
37	Philippines	2	0.1%
38	Sri Lanka	1	0.1%
39	Ghana	1	0.1%
40	Argentina	1	0.1%