Rank	Countries/Territories	Count	Percent
1	United States	556	57.6%
2	China	151	15.6%
3	Germany	82	8.5%
4	Japan	56	5.8%
5	Netherlands	17	1.8%
6	India	15	1.6%
7	Russia	11	1.1%
8	Singapore	10	1%
9	Portugal	9	0.9%
10	France	9	0.9%
11	Canada	7	0.7%
12	Ireland	5	0.5%
13	Korea, Republic of	4	0.4%
14	United Kingdom	4	0.4%
15	Nicaragua	3	0.3%
16	Hong Kong	3	0.3%
17	Iran, Islamic Republic of	2	0.2%
18	Italy	2	0.2%
19	Cyprus	2	0.2%
20	Egypt	2	0.2%
21	Australia	2	0.2%
22	Brazil	2	0.2%
23	Pakistan	2	0.2%
24	Tunisia	2	0.2%
25	Ukraine	2	0.2%
26	Philippines	1	0.1%
27	Taiwan	1	0.1%
28	Tanzania, United Republic of	1	0.1%
29	Argentina	1	0.1%
30	Austria	1	0.1%
31	Mexico	1	0.1%