Rank	Countries/Territories	Count	Percent
1	United States	263	34%
2	China	249	32.2%
3	Germany	85	11%
4	Romania	47	6.1%
5	Korea, Republic of	21	2.7%
6	Japan	19	2.5%
7	Singapore	12	1.6%
8	India	9	1.2%
9	Ireland	6	0.8%
10	Hong Kong	6	0.8%
11	France	6	0.8%
12	Australia	6	0.8%
13	Iran, Islamic Republic of	5	0.6%
14	Mexico	5	0.6%
15	Netherlands	5	0.6%
16	Argentina	4	0.5%
17	Cyprus	3	0.4%
18	Poland	3	0.4%
19	Russia	3	0.4%
20	United Kingdom	3	0.4%
21	Yemen	2	0.3%
22	South Africa	2	0.3%
23	Canada	2	0.3%
24	Indonesia	2	0.3%
25	Israel	1	0.1%
26	Malaysia	1	0.1%
27	Egypt	1	0.1%
28	Georgia	1	0.1%
29	Spain	1	0.1%
30	Norway	1	0.1%