Rank	Countries/Territories	Count	Percent
1	United States	352	42.5%
2	China	263	31.7%
3	Germany	67	8.1%
4	Canada	25	3%
5	Australia	21	2.5%
6	Ukraine	15	1.8%
7	Netherlands	14	1.7%
8	Taiwan	13	1.6%
9	Singapore	11	1.3%
10	Korea, Republic of	10	1.2%
11	Russia	7	0.8%
12	Portugal	3	0.4%
13	France	3	0.4%
14	Japan	3	0.4%
15	Bulgaria	3	0.4%
16	Hong Kong	3	0.4%
17	Cyprus	3	0.4%
18	Denmark	2	0.2%
19	Iran, Islamic Republic of	2	0.2%
20	Ireland	2	0.2%
21	Mongolia	2	0.2%
22	Switzerland	2	0.2%
23	Norway	1	0.1%
24	India	1	0.1%
25	Bangladesh	1	0.1%