Rank	Countries/Territories	Count	Percent
1	United States	445	39.9%
2	China	187	16.8%
3	Germany	133	11.9%
4	France	47	4.2%
5	United Kingdom	32	2.9%
6	Netherlands	27	2.4%
7	Canada	25	2.2%
8	Russia	20	1.8%
9	Ireland	18	1.6%
10	India	13	1.2%
11	Australia	11	1%
12	Japan	10	0.9%
13	Singapore	10	0.9%
14	Sweden	9	0.8%
15	Korea, Republic of	9	0.8%
16	Poland	9	0.8%
17	Denmark	8	0.7%
18	Romania	7	0.6%
19	Iran, Islamic Republic of	6	0.5%
20	Turkey	6	0.5%
21	Taiwan	5	0.4%
22	Saudi Arabia	5	0.4%
23	Italy	5	0.4%
24	Egypt	5	0.4%
25	Finland	5	0.4%
26	Hong Kong	5	0.4%
27	Hungary	4	0.4%
28	Nigeria	4	0.4%
29	Israel	4	0.4%
30	South Africa	4	0.4%
31	Spain	4	0.4%
32	Belgium	3	0.3%
33	Cyprus	3	0.3%
34	Czech Republic	3	0.3%
35	Algeria	2	0.2%
36	Brazil	2	0.2%
37	Ghana	2	0.2%
38	Malta	2	0.2%
39	Indonesia	2	0.2%
40	Norway	2	0.2%
41	Tunisia	2	0.2%
42	Viet Nam	2	0.2%
43	Ukraine	1	0.1%
44	Sri Lanka	1	0.1%
45	Switzerland	1	0.1%
46	Pakistan	1	0.1%
47	Portugal	1	0.1%
48	Iraq	1	0.1%
49	Bulgaria	1	0.1%
50	Argentina	1	0.1%