Rank	Countries/Territories	Count	Percent
1	United States	423	43%
2	China	315	32%
3	Germany	83	8.4%
4	Japan	34	3.5%
5	Russia	24	2.4%
6	Netherlands	16	1.6%
7	France	10	1%
8	Cyprus	6	0.6%
9	Canada	5	0.5%
10	Argentina	5	0.5%
11	Australia	5	0.5%
12	India	5	0.5%
13	Philippines	5	0.5%
14	Mongolia	4	0.4%
15	Singapore	4	0.4%
16	Hong Kong	4	0.4%
17	Ireland	4	0.4%
18	Brazil	4	0.4%
19	Iran, Islamic Republic of	3	0.3%
20	Qatar	3	0.3%
21	Korea, Republic of	3	0.3%
22	New Zealand	2	0.2%
23	Saudi Arabia	2	0.2%
24	Taiwan	2	0.2%
25	United Kingdom	2	0.2%
26	Ethiopia	2	0.2%
27	Ghana	2	0.2%
28	Azerbaijan	2	0.2%
29	Bangladesh	2	0.2%
30	Egypt	1	0.1%
31	Switzerland	1	0.1%