Rank	Countries/Territories	Count	Percent
1	United States	523	38.5%
2	China	329	24.2%
3	Germany	133	9.8%
4	Japan	49	3.6%
5	Greece	38	2.8%
6	India	35	2.6%
7	Kazakhstan	30	2.2%
8	France	20	1.5%
9	Australia	20	1.5%
10	United Kingdom	19	1.4%
11	Russia	17	1.2%
12	Tunisia	14	1%
13	Hong Kong	9	0.7%
14	Korea, Republic of	9	0.7%
15	Netherlands	8	0.6%
16	Cyprus	8	0.6%
17	Singapore	8	0.6%
18	Thailand	7	0.5%
19	Canada	7	0.5%
20	Italy	7	0.5%
21	Mexico	6	0.4%
22	Malaysia	5	0.4%
23	Spain	5	0.4%
24	Venezuela, Bolivarian Republic of	5	0.4%
25	Turkey	4	0.3%
26	Dominican Republic	4	0.3%
27	Colombia	3	0.2%
28	Chile	3	0.2%
29	Austria	3	0.2%
30	Ireland	3	0.2%
31	Saudi Arabia	3	0.2%
32	Taiwan	2	0.1%
33	Indonesia	2	0.1%
34	Iran, Islamic Republic of	2	0.1%
35	Algeria	2	0.1%
36	Egypt	2	0.1%
37	Finland	2	0.1%
38	Ghana	2	0.1%
39	Czech Republic	1	0.1%
40	Argentina	1	0.1%
41	Belgium	1	0.1%
42	Brazil	1	0.1%
43	Hungary	1	0.1%
44	Israel	1	0.1%
45	Mongolia	1	0.1%
46	Norway	1	0.1%
47	Switzerland	1	0.1%
48	Serbia	1	0.1%
49	Slovakia	1	0.1%
50	South Africa	1	0.1%