Rank	Countries/Territories	Count	Percent
1	United States	269	41.3%
2	China	166	25.5%
3	Germany	68	10.4%
4	Canada	29	4.4%
5	Japan	21	3.2%
6	Korea, Republic of	16	2.5%
7	India	9	1.4%
8	Russia	9	1.4%
9	Ireland	7	1.1%
10	Brazil	7	1.1%
11	Australia	6	0.9%
12	Cyprus	6	0.9%
13	Italy	5	0.8%
14	Netherlands	5	0.8%
15	France	4	0.6%
16	Norway	3	0.5%
17	Colombia	3	0.5%
18	Ecuador	2	0.3%
19	Argentina	2	0.3%
20	Iran, Islamic Republic of	2	0.3%
21	Singapore	2	0.3%
22	Spain	2	0.3%
23	Sweden	2	0.3%
24	Ukraine	2	0.3%
25	United Arab Emirates	2	0.3%
26	United Kingdom	1	0.2%
27	Malaysia	1	0.2%
28	Mongolia	1	0.2%