Rank	Countries/Territories	Count	Percent
1	United States	417	43.3%
2	China	243	25.2%
3	Germany	129	13.4%
4	Canada	25	2.6%
5	Japan	19	2%
6	Singapore	16	1.7%
7	Russia	15	1.6%
8	France	15	1.6%
9	Netherlands	11	1.1%
10	Korea, Republic of	10	1%
11	Kenya	8	0.8%
12	Cyprus	7	0.7%
13		6	0.6%
14	South Africa	6	0.6%
15	Ukraine	4	0.4%
16	Australia	4	0.4%
17	Bulgaria	4	0.4%
18	Egypt	3	0.3%
19	Mongolia	3	0.3%
20	India	3	0.3%
21	Hong Kong	2	0.2%
22	Sweden	2	0.2%
23	Taiwan	2	0.2%
24	Ireland	2	0.2%
25	Romania	2	0.2%
26	Norway	1	0.1%
27	Poland	1	0.1%
28	United Kingdom	1	0.1%
29	Iran, Islamic Republic of	1	0.1%
30	Argentina	1	0.1%