Rank	Countries/Territories	Count	Percent
1	United States	540	35.5%
2	China	435	28.6%
3	Germany	104	6.8%
4	Canada	85	5.6%
5	India	72	4.7%
6	Australia	45	3%
7	Netherlands	28	1.8%
8	France	23	1.5%
9	United Kingdom	21	1.4%
10	Japan	16	1.1%
11	Singapore	14	0.9%
12	Ukraine	13	0.9%
13	Switzerland	10	0.7%
14	Mexico	9	0.6%
15	Korea, Republic of	9	0.6%
16	Cyprus	9	0.6%
17	Brazil	7	0.5%
18	Russia	7	0.5%
19	Italy	5	0.3%
20	Ireland	4	0.3%
21	Austria	4	0.3%
22	Ghana	4	0.3%
23	Tunisia	4	0.3%
24	Turkey	4	0.3%
25	Taiwan	3	0.2%
26	South Africa	3	0.2%
27	Ethiopia	3	0.2%
28	Argentina	3	0.2%
29	Kenya	3	0.2%
30	Peru	3	0.2%
31	Slovakia	2	0.1%
32	Mongolia	2	0.1%
33	Nepal	2	0.1%
34	Nicaragua	2	0.1%
35	Pakistan	2	0.1%
36	Israel	2	0.1%
37	Malaysia	2	0.1%
38	Indonesia	2	0.1%
39	Iran, Islamic Republic of	2	0.1%
40	Iraq	2	0.1%
41	Sweden	2	0.1%
42	Spain	1	0.1%
43	Thailand	1	0.1%
44	Hong Kong	1	0.1%
45	Algeria	1	0.1%
46	Azerbaijan	1	0.1%
47	Estonia	1	0.1%
48	Luxembourg	1	0.1%
49	Malawi	1	0.1%
50	Poland	1	0.1%
51	Romania	1	0.1%