Rank	Countries/Territories	Count	Percent
1	United States	463	33.6%
2	China	317	23%
3	Germany	164	11.9%
4		46	3.3%
5	Canada	41	3%
6	France	40	2.9%
7	Italy	24	1.7%
8	Japan	23	1.7%
9	Netherlands	17	1.2%
10	India	14	1%
11	Argentina	13	0.9%
12	Australia	13	0.9%
13	Mexico	12	0.9%
14	Saudi Arabia	12	0.9%
15	Russia	11	0.8%
16	Korea, Republic of	11	0.8%
17	Greece	10	0.7%
18	Brazil	9	0.7%
19	Egypt	8	0.6%
20	Ireland	8	0.6%
21	South Africa	8	0.6%
22	Spain	7	0.5%
23	Taiwan	7	0.5%
24	United Kingdom	7	0.5%
25	Cyprus	7	0.5%
26	Norway	6	0.4%
27	Uganda	6	0.4%
28	Ukraine	5	0.4%
29	Turkey	5	0.4%
30	Poland	5	0.4%
31	Hong Kong	4	0.3%
32	Bulgaria	4	0.3%
33	Colombia	4	0.3%
34	Romania	4	0.3%
35	Singapore	4	0.3%
36	Sweden	3	0.2%
37	Viet Nam	3	0.2%
38	Denmark	3	0.2%
39	Portugal	3	0.2%
40	Puerto Rico	2	0.1%
41	Pakistan	2	0.1%
42	Philippines	2	0.1%
43	Lithuania	2	0.1%
44	Israel	2	0.1%
45	Indonesia	2	0.1%
46	Iran, Islamic Republic of	2	0.1%
47	Bangladesh	2	0.1%
48	Thailand	2	0.1%
49	Switzerland	2	0.1%
50	Tanzania, United Republic of	1	0.1%
51	Czech Republic	1	0.1%
52	Latvia	1	0.1%
53	Kenya	1	0.1%
54	New Zealand	1	0.1%