Rank	Countries/Territories	Count	Percent
1	United States	370	38.9%
2	China	281	29.5%
3	Germany	114	12%
4	Japan	23	2.4%
5		22	2.3%
6	Singapore	15	1.6%
7	Netherlands	13	1.4%
8	France	13	1.4%
9	Norway	10	1.1%
10	India	10	1.1%
11	Cyprus	9	0.9%
12	Australia	8	0.8%
13	Canada	8	0.8%
14	Switzerland	8	0.8%
15	Turkey	6	0.6%
16	Ukraine	6	0.6%
17	Iran, Islamic Republic of	6	0.6%
18	Ireland	5	0.5%
19	Mexico	4	0.4%
20	Taiwan	3	0.3%
21	Poland	2	0.2%
22	Korea, Republic of	2	0.2%
23	Malaysia	2	0.2%
24	Egypt	2	0.2%
25	Armenia	2	0.2%
26	Colombia	2	0.2%
27	Bangladesh	1	0.1%
28	Argentina	1	0.1%
29	Hong Kong	1	0.1%
30	Mongolia	1	0.1%
31	New Zealand	1	0.1%