Rank	Countries/Territories	Count	Percent
1	United States	492	35.2%
2	China	354	25.4%
3	Germany	120	8.6%
4	United Kingdom	67	4.8%
5	Denmark	42	3%
6	Japan	26	1.9%
7	Korea, Republic of	26	1.9%
8	Brazil	25	1.8%
9	India	21	1.5%
10	France	16	1.1%
11	Netherlands	15	1.1%
12	Latvia	14	1%
13	Taiwan	14	1%
14	Australia	13	0.9%
15	Czech Republic	11	0.8%
16	Chile	10	0.7%
17	Canada	9	0.6%
18	Turkey	9	0.6%
19	Spain	9	0.6%
20	Russia	7	0.5%
21	Cyprus	7	0.5%
22	Pakistan	7	0.5%
23	Hong Kong	7	0.5%
24	Italy	6	0.4%
25	Ireland	6	0.4%
26	Belgium	6	0.4%
27	Greece	6	0.4%
28	Ukraine	6	0.4%
29	United Arab Emirates	4	0.3%
30	Thailand	4	0.3%
31	Singapore	3	0.2%
32	Israel	3	0.2%
33	Indonesia	3	0.2%
34	Iran, Islamic Republic of	2	0.1%
35	Iraq	2	0.1%
36	Norway	2	0.1%
37	Egypt	2	0.1%
38	Armenia	2	0.1%
39	South Africa	2	0.1%
40	Saudi Arabia	2	0.1%
41	Poland	2	0.1%
42	Romania	2	0.1%
43	Malaysia	2	0.1%
44	Tanzania, United Republic of	2	0.1%
45	Sweden	1	0.1%
46	Switzerland	1	0.1%
47	Austria	1	0.1%
48	Georgia	1	0.1%
49	Philippines	1	0.1%
50	Lebanon	1	0.1%