Rank	Countries/Territories	Count	Percent
1	United States	481	61.4%
2	China	104	13.3%
3	Germany	51	6.5%
4	Japan	48	6.1%
5	Netherlands	15	1.9%
6	India	15	1.9%
7	Portugal	9	1.1%
8	Russia	9	1.1%
9	Singapore	9	1.1%
10	Ireland	5	0.6%
11	Korea, Republic of	4	0.5%
12	United Kingdom	4	0.5%
13	Nicaragua	3	0.4%
14	Canada	3	0.4%
15	France	3	0.4%
16	Cyprus	2	0.3%
17	Egypt	2	0.3%
18	Australia	2	0.3%
19	Brazil	2	0.3%
20	Italy	2	0.3%
21	Hong Kong	2	0.3%
22	Tunisia	2	0.3%
23	Ukraine	2	0.3%
24	Taiwan	1	0.1%
25	Tanzania, United Republic of	1	0.1%
26	Mexico	1	0.1%
27	Argentina	1	0.1%
28	Austria	1	0.1%