Rank	Countries/Territories	Count	Percent
1	United States	563	46.9%
2	China	297	24.7%
3	Germany	90	7.5%
4	France	39	3.2%
5	Greece	26	2.2%
6	Sweden	16	1.3%
7	Netherlands	15	1.2%
8	Denmark	12	1%
9	Canada	12	1%
10	Cyprus	11	0.9%
11	Iran, Islamic Republic of	9	0.7%
12	Russia	9	0.7%
13	Singapore	9	0.7%
14	Australia	7	0.6%
15	India	7	0.6%
16	Austria	6	0.5%
17	Colombia	6	0.5%
18	Hong Kong	6	0.5%
19	Switzerland	6	0.5%
20	Norway	6	0.5%
21	Japan	5	0.4%
22	Brazil	5	0.4%
23	Palestine, State of	4	0.3%
24	United Kingdom	4	0.3%
25	Korea, Republic of	3	0.2%
26	Ireland	3	0.2%
27	Israel	2	0.2%
28	Italy	2	0.2%
29	Bulgaria	2	0.2%
30	Argentina	2	0.2%
31	Malaysia	2	0.2%
32	Mexico	2	0.2%
33	Mongolia	2	0.2%
34	Peru	2	0.2%
35	Taiwan	2	0.2%
36	Ukraine	2	0.2%
37	Venezuela, Bolivarian Republic of	2	0.2%
38	United Arab Emirates	1	0.1%
39	Romania	1	0.1%
40	Guatemala	1	0.1%