Rank	Countries/Territories	Count	Percent
1	United States	415	39.3%
2	China	180	17%
3	Germany	123	11.6%
4	France	47	4.5%
5	United Kingdom	29	2.7%
6	Netherlands	27	2.6%
7	Canada	25	2.4%
8	Russia	20	1.9%
9	Ireland	18	1.7%
10	India	13	1.2%
11	Japan	10	0.9%
12	Australia	10	0.9%
13	Singapore	10	0.9%
14	Sweden	9	0.9%
15	Korea, Republic of	9	0.9%
16	Denmark	8	0.8%
17	Poland	7	0.7%
18	Romania	7	0.7%
19	Iran, Islamic Republic of	6	0.6%
20	Italy	5	0.5%
21	Egypt	5	0.5%
22	Finland	5	0.5%
23	Hong Kong	5	0.5%
24	Saudi Arabia	5	0.5%
25	South Africa	4	0.4%
26	Spain	4	0.4%
27	Taiwan	4	0.4%
28	Hungary	4	0.4%
29	Israel	4	0.4%
30	Nigeria	4	0.4%
31	Czech Republic	3	0.3%
32	Belgium	3	0.3%
33	Brazil	2	0.2%
34	Cyprus	2	0.2%
35	Algeria	2	0.2%
36	Ghana	2	0.2%
37	Norway	2	0.2%
38	Malta	2	0.2%
39	Indonesia	2	0.2%
40	Tunisia	2	0.2%
41	Turkey	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	Iraq	1	0.1%
47	Portugal	1	0.1%
48	Pakistan	1	0.1%
49	Argentina	1	0.1%
50	Bulgaria	1	0.1%