Rank	Countries/Territories	Count	Percent
1	United States	312	43.9%
2	China	176	24.8%
3	Germany	46	6.5%
4	Greece	19	2.7%
5	France	18	2.5%
6	Sweden	14	2%
7	Denmark	12	1.7%
8	Iran, Islamic Republic of	9	1.3%
9	Russia	9	1.3%
10	Cyprus	8	1.1%
11	Canada	7	1%
12	Singapore	7	1%
13	Switzerland	6	0.8%
14	Netherlands	6	0.8%
15	Norway	6	0.8%
16	Colombia	6	0.8%
17	Brazil	5	0.7%
18	Palestine, State of	4	0.6%
19	Hong Kong	4	0.6%
20	United Kingdom	4	0.6%
21	India	3	0.4%
22	Japan	3	0.4%
23	Ireland	3	0.4%
24	Israel	2	0.3%
25	Italy	2	0.3%
26	Bulgaria	2	0.3%
27	Argentina	2	0.3%
28	Korea, Republic of	2	0.3%
29	Malaysia	2	0.3%
30	Mexico	2	0.3%
31	Peru	2	0.3%
32	Taiwan	2	0.3%
33	Ukraine	2	0.3%
34	United Arab Emirates	1	0.1%
35	Austria	1	0.1%
36	Guatemala	1	0.1%