Rank	Countries/Territories	Count	Percent
1	United States	576	45.4%
2	China	268	21.1%
3	Germany	105	8.3%
4	India	58	4.6%
5	Korea, Republic of	35	2.8%
6	Netherlands	28	2.2%
7	United Kingdom	23	1.8%
8	Japan	22	1.7%
9	Canada	16	1.3%
10	Singapore	14	1.1%
11	Egypt	11	0.9%
12	Russia	10	0.8%
13	Mongolia	10	0.8%
14	Cyprus	7	0.6%
15	Taiwan	7	0.6%
16	Indonesia	6	0.5%
17	Ireland	6	0.5%
18	Nigeria	6	0.5%
19	Romania	5	0.4%
20	Pakistan	5	0.4%
21	Iran, Islamic Republic of	5	0.4%
22	Australia	4	0.3%
23	France	4	0.3%
24	Poland	4	0.3%
25	Hong Kong	4	0.3%
26	Morocco	3	0.2%
27	Thailand	3	0.2%
28	Tunisia	2	0.2%
29	Turkey	2	0.2%
30	Sweden	2	0.2%
31	Nepal	2	0.2%
32	Italy	2	0.2%
33	Malaysia	2	0.2%
34	Kuwait	2	0.2%
35	Latvia	1	0.1%
36	Lithuania	1	0.1%
37	Israel	1	0.1%
38	Ghana	1	0.1%
39	Greece	1	0.1%
40	Mexico	1	0.1%
41	Norway	1	0.1%
42	Portugal	1	0.1%
43	Serbia	1	0.1%
44	Spain	1	0.1%
45	Tanzania, United Republic of	1	0.1%