Rank	Countries/Territories	Count	Percent
1	United States	180	33.9%
2	China	175	33%
3	Germany	33	6.2%
4	Greece	24	4.5%
5	Singapore	12	2.3%
6	United Kingdom	11	2.1%
7	Italy	11	2.1%
8	Japan	10	1.9%
9	Brazil	9	1.7%
10	India	8	1.5%
11	Spain	7	1.3%
12	Netherlands	6	1.1%
13	Iran, Islamic Republic of	6	1.1%
14	France	5	0.9%
15	Taiwan	4	0.8%
16	Sweden	4	0.8%
17	Canada	3	0.6%
18	Cyprus	3	0.6%
19	Hong Kong	2	0.4%
20	Ireland	2	0.4%
21	Israel	2	0.4%
22	Malaysia	2	0.4%
23	New Zealand	2	0.4%
24	Morocco	2	0.4%
25	Viet Nam	2	0.4%
26	Poland	1	0.2%
27	Russia	1	0.2%
28	Switzerland	1	0.2%
29	Mexico	1	0.2%
30	Australia	1	0.2%
31	Colombia	1	0.2%