Rank	Countries/Territories	Count	Percent
1	United States	383	52.7%
2	China	152	20.9%
3	Germany	74	10.2%
4	Canada	28	3.9%
5	Netherlands	17	2.3%
6	France	13	1.8%
7	Japan	13	1.8%
8	Switzerland	7	1%
9	South Africa	6	0.8%
10	Australia	6	0.8%
11	Singapore	5	0.7%
12	United Kingdom	4	0.6%
13	Ukraine	3	0.4%
14	Argentina	3	0.4%
15	Cyprus	3	0.4%
16	Norway	2	0.3%
17	Russia	2	0.3%
18	Lithuania	1	0.1%
19	Malaysia	1	0.1%
20	Mongolia	1	0.1%
21	India	1	0.1%
22	Iran, Islamic Republic of	1	0.1%
23	Brazil	1	0.1%