Rank	Countries/Territories	Count	Percent
1	United States	280	41.2%
2	China	203	29.9%
3	Germany	54	8%
4	India	24	3.5%
5	Russia	18	2.7%
6	Japan	14	2.1%
7	France	14	2.1%
8	Ireland	10	1.5%
9	Hong Kong	9	1.3%
10	Netherlands	7	1%
11	Cyprus	7	1%
12	United Kingdom	6	0.9%
13	Poland	4	0.6%
14	Romania	4	0.6%
15	Sierra Leone	4	0.6%
16	Australia	3	0.4%
17	Canada	2	0.3%
18	Greece	2	0.3%
19	Iran, Islamic Republic of	2	0.3%
20	Singapore	2	0.3%
21	Spain	2	0.3%
22	Ukraine	2	0.3%
23	Turkey	1	0.1%
24	Norway	1	0.1%
25	Korea, Republic of	1	0.1%
26	Mongolia	1	0.1%
27	Argentina	1	0.1%
28	Czech Republic	1	0.1%