Rank	Countries/Territories	Count	Percent
1	United States	503	42.6%
2	China	300	25.4%
3	Germany	96	8.1%
4	India	41	3.5%
5	Canada	27	2.3%
6	France	25	2.1%
7	Korea, Republic of	18	1.5%
8	Japan	17	1.4%
9	Singapore	16	1.4%
10	Netherlands	14	1.2%
11	Saudi Arabia	14	1.2%
12	Iran, Islamic Republic of	13	1.1%
13	Ireland	10	0.8%
14	Russia	10	0.8%
15	Sweden	10	0.8%
16	Malaysia	8	0.7%
17	Cyprus	8	0.7%
18	Colombia	7	0.6%
19	United Kingdom	7	0.6%
20	Brazil	6	0.5%
21	Argentina	4	0.3%
22	Australia	3	0.3%
23	Iraq	3	0.3%
24	Norway	3	0.3%
25	Puerto Rico	2	0.2%
26	Switzerland	2	0.2%
27	Taiwan	2	0.2%
28	Thailand	2	0.2%
29	Croatia	2	0.2%
30	Algeria	2	0.2%
31	Bulgaria	1	0.1%
32	Hong Kong	1	0.1%
33	South Africa	1	0.1%
34	Romania	1	0.1%
35	Pakistan	1	0.1%