Rank	Countries/Territories	Count	Percent
1	United States	291	42.8%
2	China	216	31.8%
3	Germany	73	10.7%
4	Canada	20	2.9%
5	Japan	16	2.4%
6	Ukraine	13	1.9%
7	Netherlands	6	0.9%
8	Norway	6	0.9%
9	Singapore	6	0.9%
10	Cyprus	6	0.9%
11	France	5	0.7%
12	Argentina	3	0.4%
13	India	3	0.4%
14	Switzerland	3	0.4%
15	Russia	3	0.4%
16	Taiwan	2	0.3%
17	Spain	2	0.3%
18	Australia	2	0.3%
19	Malaysia	2	0.3%
20	Hong Kong	1	0.1%
21	Korea, Republic of	1	0.1%