Rank	Countries/Territories	Count	Percent
1	United States	442	45.1%
2	China	226	23.1%
3	Germany	114	11.6%
4	Japan	62	6.3%
5	Netherlands	12	1.2%
6	Singapore	12	1.2%
7	India	12	1.2%
8	Brazil	11	1.1%
9	Spain	11	1.1%
10	France	8	0.8%
11	Canada	7	0.7%
12	Italy	6	0.6%
13	Korea, Republic of	6	0.6%
14	Mexico	5	0.5%
15	Russia	5	0.5%
16	United Kingdom	4	0.4%
17	Ukraine	3	0.3%
18	Kenya	3	0.3%
19	Hong Kong	3	0.3%
20	Iran, Islamic Republic of	2	0.2%
21	Ireland	2	0.2%
22	Australia	2	0.2%
23	Costa Rica	2	0.2%
24	Cyprus	2	0.2%
25	Malaysia	2	0.2%
26	Switzerland	2	0.2%
27	Taiwan	2	0.2%
28	Nicaragua	1	0.1%
29	Palestine, State of	1	0.1%
30	Portugal	1	0.1%
31	Romania	1	0.1%
32	Mongolia	1	0.1%
33	Jordan	1	0.1%
34	Kazakhstan	1	0.1%
35	Czech Republic	1	0.1%
36	Belgium	1	0.1%
37	Israel	1	0.1%
38	Argentina	1	0.1%
39	Zimbabwe	1	0.1%