Rank	Countries/Territories	Count	Percent
1	United States	315	43.9%
2	China	179	25%
3	Germany	59	8.2%
4	Japan	19	2.6%
5	Netherlands	17	2.4%
6	India	15	2.1%
7	Ireland	11	1.5%
8	Singapore	8	1.1%
9	Turkey	7	1%
10	Norway	7	1%
11		7	1%
12	Canada	6	0.8%
13	Romania	6	0.8%
14	United Kingdom	6	0.8%
15	Taiwan	6	0.8%
16	France	5	0.7%
17	Italy	4	0.6%
18	Iran, Islamic Republic of	4	0.6%
19	Argentina	4	0.6%
20	Cyprus	4	0.6%
21	Korea, Republic of	4	0.6%
22	Madagascar	3	0.4%
23	Greece	3	0.4%
24	Egypt	2	0.3%
25	Armenia	2	0.3%
26	New Zealand	2	0.3%
27	Sweden	2	0.3%
28	Malaysia	2	0.3%
29	United Arab Emirates	1	0.1%
30	Switzerland	1	0.1%
31	Thailand	1	0.1%
32	Trinidad and Tobago	1	0.1%
33	Malawi	1	0.1%
34	Australia	1	0.1%
35	Colombia	1	0.1%
36	Hong Kong	1	0.1%