Rank	Countries/Territories	Count	Percent
1	United States	252	37.7%
2	China	142	21.3%
3	Germany	66	9.9%
4	Japan	37	5.5%
5	India	34	5.1%
6	Ireland	17	2.5%
7	Australia	10	1.5%
8	Canada	10	1.5%
9	Netherlands	9	1.3%
10	Mexico	8	1.2%
11	Iran, Islamic Republic of	7	1%
12	Ukraine	7	1%
13	France	6	0.9%
14	Egypt	6	0.9%
15	Philippines	6	0.9%
16	Malaysia	4	0.6%
17	Singapore	4	0.6%
18	Croatia	4	0.6%
19	Cyprus	4	0.6%
20	Brazil	4	0.6%
21	United Kingdom	4	0.6%
22	Korea, Republic of	3	0.4%
23	Morocco	3	0.4%
24	Mongolia	2	0.3%
25	Saudi Arabia	2	0.3%
26	Turkey	2	0.3%
27	Pakistan	2	0.3%
28	United Arab Emirates	2	0.3%
29	Romania	1	0.1%
30	Spain	1	0.1%
31	Syrian Arab Republic	1	0.1%
32	Nepal	1	0.1%
33	Nigeria	1	0.1%
34	Norway	1	0.1%
35	Chile	1	0.1%
36	Finland	1	0.1%
37	Georgia	1	0.1%
38	Hong Kong	1	0.1%
39	Israel	1	0.1%