Rank	Countries/Territories	Count	Percent
1	United States	303	38.4%
2	China	223	28.3%
3	Germany	148	18.8%
4	Canada	19	2.4%
5	Pakistan	11	1.4%
6	Singapore	9	1.1%
7	France	8	1%
8	Malaysia	6	0.8%
9	Japan	6	0.8%
10	Cyprus	6	0.8%
11	India	5	0.6%
12	Australia	4	0.5%
13	Iran, Islamic Republic of	4	0.5%
14	Netherlands	4	0.5%
15	Norway	3	0.4%
16	United Kingdom	3	0.4%
17	Poland	3	0.4%
18	Moldova, Republic of	3	0.4%
19	Brazil	3	0.4%
20	Ireland	2	0.3%
21	Korea, Republic of	2	0.3%
22	Saudi Arabia	2	0.3%
23	Peru	2	0.3%
24	Spain	2	0.3%
25	Sweden	1	0.1%
26	Switzerland	1	0.1%
27	Ukraine	1	0.1%
28	Philippines	1	0.1%
29	Mexico	1	0.1%
30	Belgium	1	0.1%
31	Indonesia	1	0.1%
32	Denmark	1	0.1%