Rank	Countries/Territories	Count	Percent
1	United States	273	36.4%
2	China	242	32.3%
3	Germany	168	22.4%
4	Norway	14	1.9%
5	Australia	8	1.1%
6	Netherlands	6	0.8%
7	Cyprus	4	0.5%
8	France	4	0.5%
9	Hong Kong	4	0.5%
10	Iran, Islamic Republic of	4	0.5%
11	India	3	0.4%
12	Italy	3	0.4%
13	Japan	2	0.3%
14	Lithuania	2	0.3%
15	Malaysia	2	0.3%
16	Argentina	2	0.3%
17	Canada	2	0.3%
18	South Africa	2	0.3%
19	Thailand	2	0.3%
20	Ireland	1	0.1%
21	Singapore	1	0.1%
22	Korea, Republic of	1	0.1%