Rank	Countries/Territories	Count	Percent
1	United States	344	31.6%
2	China	292	26.8%
3	Italy	88	8.1%
4	Germany	68	6.2%
5	Japan	54	5%
6	India	33	3%
7	Russia	26	2.4%
8	Canada	16	1.5%
9	Singapore	14	1.3%
10	United Kingdom	11	1%
11	Spain	10	0.9%
12	Taiwan	9	0.8%
13	France	9	0.8%
14	Netherlands	7	0.6%
15	Peru	7	0.6%
16	Norway	6	0.6%
17	Chile	6	0.6%
18	Argentina	4	0.4%
19	Australia	4	0.4%
20	Czech Republic	4	0.4%
21	Hong Kong	4	0.4%
22	Poland	4	0.4%
23	Romania	4	0.4%
24	Iran, Islamic Republic of	4	0.4%
25	Korea, Republic of	4	0.4%
26	Thailand	4	0.4%
27	Viet Nam	4	0.4%
28	Turkey	3	0.3%
29	Saudi Arabia	3	0.3%
30	Israel	3	0.3%
31	Pakistan	3	0.3%
32	Philippines	3	0.3%
33	Egypt	3	0.3%
34	Brazil	3	0.3%
35	Cyprus	3	0.3%
36	Croatia	2	0.2%
37	Portugal	2	0.2%
38	Malaysia	2	0.2%
39	Kazakhstan	2	0.2%
40	Ireland	2	0.2%
41	Indonesia	2	0.2%
42	Tunisia	2	0.2%
43	Sweden	2	0.2%
44	Switzerland	1	0.1%
45	Serbia	1	0.1%
46	Slovakia	1	0.1%
47	United Arab Emirates	1	0.1%
48	Mongolia	1	0.1%
49	Belgium	1	0.1%
50	Denmark	1	0.1%
51	Iceland	1	0.1%
52	Greece	1	0.1%