Rank	Countries/Territories	Count	Percent
1	United States	482	44%
2	China	263	24%
3	Germany	117	10.7%
4	Japan	64	5.8%
5	India	26	2.4%
6	Netherlands	13	1.2%
7	Singapore	12	1.1%
8	Spain	11	1%
9	Brazil	11	1%
10	United Kingdom	11	1%
11	Canada	9	0.8%
12	France	8	0.7%
13	Taiwan	7	0.6%
14	Italy	6	0.5%
15	Korea, Republic of	6	0.5%
16	Russia	6	0.5%
17	Mexico	5	0.5%
18	Malaysia	4	0.4%
19	Hong Kong	4	0.4%
20	Kenya	3	0.3%
21	Ukraine	3	0.3%
22	Switzerland	2	0.2%
23	Iran, Islamic Republic of	2	0.2%
24	Ireland	2	0.2%
25	Australia	2	0.2%
26	Costa Rica	2	0.2%
27	Cyprus	2	0.2%
28	Czech Republic	1	0.1%
29	Belgium	1	0.1%
30	Israel	1	0.1%
31	Argentina	1	0.1%
32	Nicaragua	1	0.1%
33	Palestine, State of	1	0.1%
34	Portugal	1	0.1%
35	Romania	1	0.1%
36	Jordan	1	0.1%
37	Kazakhstan	1	0.1%
38	Mongolia	1	0.1%
39	Zimbabwe	1	0.1%