Rank	Countries/Territories	Count	Percent
1	United States	319	32.1%
2	China	267	26.9%
3	Italy	82	8.2%
4	Germany	65	6.5%
5	Japan	38	3.8%
6	India	30	3%
7	Russia	26	2.6%
8	Canada	16	1.6%
9	Singapore	14	1.4%
10	United Kingdom	11	1.1%
11	Spain	9	0.9%
12	France	9	0.9%
13	Taiwan	8	0.8%
14	Peru	7	0.7%
15	Norway	6	0.6%
16	Poland	4	0.4%
17	Netherlands	4	0.4%
18	Iran, Islamic Republic of	4	0.4%
19	Korea, Republic of	4	0.4%
20	Argentina	4	0.4%
21	Czech Republic	4	0.4%
22	Hong Kong	4	0.4%
23	Thailand	4	0.4%
24	Viet Nam	4	0.4%
25	Turkey	3	0.3%
26	Saudi Arabia	3	0.3%
27	Cyprus	3	0.3%
28	Egypt	3	0.3%
29	Australia	3	0.3%
30	Brazil	3	0.3%
31	Israel	3	0.3%
32	Romania	3	0.3%
33	Pakistan	3	0.3%
34	Philippines	3	0.3%
35	Portugal	2	0.2%
36	Kazakhstan	2	0.2%
37	Croatia	2	0.2%
38	Indonesia	2	0.2%
39	Tunisia	2	0.2%
40	Sweden	2	0.2%
41	Switzerland	1	0.1%
42	Slovakia	1	0.1%
43	Iceland	1	0.1%
44	Greece	1	0.1%
45	Denmark	1	0.1%
46	Belgium	1	0.1%
47	Malaysia	1	0.1%
48	Mongolia	1	0.1%
49	Ireland	1	0.1%