Rank	Countries/Territories	Count	Percent
1	United States	195	41.1%
2	China	117	24.6%
3	Germany	65	13.7%
4	Canada	18	3.8%
5	Netherlands	16	3.4%
6	France	9	1.9%
7	Ireland	9	1.9%
8	Japan	8	1.7%
9	Singapore	7	1.5%
10	Norway	5	1.1%
11	United Kingdom	3	0.6%
12	Peru	2	0.4%
13	Philippines	2	0.4%
14	Russia	2	0.4%
15	India	2	0.4%
16	Korea, Republic of	2	0.4%
17	Malta	2	0.4%
18	Armenia	2	0.4%
19	Australia	2	0.4%
20	Brazil	2	0.4%
21	Iran, Islamic Republic of	1	0.2%
22	Romania	1	0.2%
23	Spain	1	0.2%
24	Taiwan	1	0.2%
25	Yemen	1	0.2%