Rank	Countries/Territories	Count	Percent
1	United States	529	44.3%
2	China	283	23.7%
3	Germany	75	6.3%
4	United Kingdom	38	3.2%
5	India	33	2.8%
6	Mexico	31	2.6%
7	Australia	21	1.8%
8	Canada	16	1.3%
9	Japan	16	1.3%
10	Netherlands	16	1.3%
11	France	12	1%
12	Switzerland	12	1%
13	Iran, Islamic Republic of	9	0.8%
14	Ireland	7	0.6%
15	Singapore	7	0.6%
16	Italy	6	0.5%
17	Taiwan	6	0.5%
18	Spain	5	0.4%
19	Mongolia	5	0.4%
20	Lithuania	5	0.4%
21	Russia	5	0.4%
22	Ecuador	5	0.4%
23	Argentina	4	0.3%
24	Cyprus	4	0.3%
25	Czech Republic	4	0.3%
26	Hungary	4	0.3%
27	New Zealand	3	0.3%
28	Romania	3	0.3%
29	Malaysia	3	0.3%
30	Chile	3	0.3%
31	Greece	3	0.3%
32	Colombia	2	0.2%
33	Kenya	2	0.2%
34	Slovakia	2	0.2%
35	Puerto Rico	2	0.2%
36	Norway	1	0.1%
37	South Africa	1	0.1%
38	Korea, Republic of	1	0.1%
39	Mauritius	1	0.1%
40	Morocco	1	0.1%
41	Bahrain	1	0.1%
42	Bangladesh	1	0.1%
43	Honduras	1	0.1%
44	Indonesia	1	0.1%
45	Egypt	1	0.1%
46	Viet Nam	1	0.1%
47	Ukraine	1	0.1%
48	United Arab Emirates	1	0.1%