Rank	Countries/Territories	Count	Percent
1	United States	334	39.1%
2	China	236	27.6%
3	Germany	84	9.8%
4	India	31	3.6%
5	Canada	13	1.5%
6	Japan	12	1.4%
7	Spain	12	1.4%
8	Switzerland	11	1.3%
9	France	10	1.2%
10	Syrian Arab Republic	9	1.1%
11	Thailand	9	1.1%
12	Turkey	8	0.9%
13	United Kingdom	8	0.9%
14	Ireland	8	0.9%
15	Netherlands	8	0.9%
16	Malaysia	6	0.7%
17	Mexico	5	0.6%
18	Argentina	4	0.5%
19	Iran, Islamic Republic of	4	0.5%
20	South Africa	4	0.5%
21	Saudi Arabia	4	0.5%
22	Nigeria	3	0.4%
23	Poland	3	0.4%
24	Cyprus	3	0.4%
25	Australia	3	0.4%
26	Brazil	3	0.4%
27	Italy	3	0.4%
28	Malta	2	0.2%
29	Moldova, Republic of	2	0.2%
30	Belgium	2	0.2%
31	Egypt	2	0.2%
32	Romania	2	0.2%
33	Singapore	2	0.2%
34	Russia	1	0.1%
35	Portugal	1	0.1%
36	Sri Lanka	1	0.1%
37	New Zealand	1	0.1%