Rank	Countries/Territories	Count	Percent
1	United States	273	41.3%
2	China	170	25.7%
3	Germany	70	10.6%
4	Japan	24	3.6%
5	India	23	3.5%
6	Mongolia	14	2.1%
7	Korea, Republic of	10	1.5%
8	Singapore	10	1.5%
9	Ireland	10	1.5%
10	Netherlands	7	1.1%
11	Italy	6	0.9%
12	Chile	5	0.8%
13	Australia	4	0.6%
14	Mexico	4	0.6%
15	Russia	3	0.5%
16	Spain	3	0.5%
17	Taiwan	3	0.5%
18	Ukraine	3	0.5%
19	Canada	3	0.5%
20	Cyprus	3	0.5%
21	Ecuador	2	0.3%
22	Colombia	2	0.3%
23	Bangladesh	1	0.2%
24	Belgium	1	0.2%
25	Brazil	1	0.2%
26	Egypt	1	0.2%
27	Hong Kong	1	0.2%
28	Indonesia	1	0.2%
29	Sweden	1	0.2%
30	Peru	1	0.2%
31	Macao	1	0.2%