Rank	Countries/Territories	Count	Percent
1	United States	375	39.8%
2	China	307	32.6%
3	Germany	128	13.6%
4	Japan	20	2.1%
5	France	17	1.8%
6	India	12	1.3%
7	Netherlands	11	1.2%
8	Korea, Republic of	8	0.8%
9	South Africa	8	0.8%
10	Switzerland	8	0.8%
11	Singapore	6	0.6%
12	Canada	6	0.6%
13	Ireland	5	0.5%
14	Puerto Rico	5	0.5%
15	Pakistan	3	0.3%
16	Italy	3	0.3%
17	Cyprus	3	0.3%
18	Bangladesh	3	0.3%
19	Brazil	2	0.2%
20	Australia	2	0.2%
21	Iran, Islamic Republic of	2	0.2%
22	Russia	2	0.2%
23	United Kingdom	2	0.2%
24	Ukraine	1	0.1%
25	Romania	1	0.1%
26	Norway	1	0.1%
27	Argentina	1	0.1%
28	Bulgaria	1	0.1%