Rank	Countries/Territories	Count	Percent
1	United States	512	33.9%
2	China	423	28%
3	Germany	121	8%
4	India	58	3.8%
5	Spain	56	3.7%
6	United Kingdom	38	2.5%
7	Japan	30	2%
8	Singapore	28	1.9%
9	Norway	24	1.6%
10	France	23	1.5%
11	Ukraine	20	1.3%
12	Canada	19	1.3%
13	Korea, Republic of	15	1%
14	Australia	12	0.8%
15	Netherlands	11	0.7%
16	Taiwan	9	0.6%
17	Romania	8	0.5%
18	Hong Kong	7	0.5%
19	South Africa	6	0.4%
20	Philippines	6	0.4%
21	Mexico	5	0.3%
22	Iran, Islamic Republic of	5	0.3%
23	Italy	5	0.3%
24	Austria	5	0.3%
25	Cyprus	4	0.3%
26	Czech Republic	4	0.3%
27	Egypt	4	0.3%
28	Indonesia	4	0.3%
29	Greece	4	0.3%
30	Lithuania	4	0.3%
31	Sweden	4	0.3%
32	Turkey	3	0.2%
33	Mauritius	3	0.2%
34	Latvia	3	0.2%
35	Ireland	3	0.2%
36	Israel	3	0.2%
37	Russia	3	0.2%
38	Finland	3	0.2%
39	Bangladesh	2	0.1%
40	Belarus	2	0.1%
41	Belgium	2	0.1%
42	Tunisia	2	0.1%
43	Uruguay	1	0.1%
44	Brazil	1	0.1%
45	Hungary	1	0.1%
46	Ghana	1	0.1%
47	Saudi Arabia	1	0.1%
48	Mongolia	1	0.1%
49	Poland	1	0.1%