Rank	Countries/Territories	Count	Percent
1	United States	871	42.6%
2	China	458	22.4%
3	Germany	241	11.8%
4	France	60	2.9%
5		49	2.4%
6	Canada	38	1.9%
7	India	36	1.8%
8	Netherlands	30	1.5%
9	United Kingdom	24	1.2%
10	Japan	20	1%
11	Russia	19	0.9%
12	Iran, Islamic Republic of	16	0.8%
13	Norway	15	0.7%
14	Ireland	13	0.6%
15	Australia	13	0.6%
16	Denmark	11	0.5%
17	Italy	10	0.5%
18	Mexico	10	0.5%
19	Singapore	10	0.5%
20	Sweden	8	0.4%
21	Spain	7	0.3%
22	Hong Kong	7	0.3%
23	Cyprus	6	0.3%
24	Indonesia	6	0.3%
25	Latvia	6	0.3%
26	Thailand	6	0.3%
27	Brazil	5	0.2%
28	Austria	4	0.2%
29	Greece	4	0.2%
30	New Zealand	4	0.2%
31	Turkey	4	0.2%
32	Portugal	4	0.2%
33	Taiwan	4	0.2%
34	Korea, Republic of	3	0.1%
35	Egypt	3	0.1%
36	Hungary	2	0.1%
37	Bangladesh	2	0.1%
38	Mongolia	2	0.1%
39	Peru	2	0.1%
40	Poland	2	0.1%
41	Switzerland	2	0.1%
42	Ukraine	1	0%
43	Philippines	1	0%
44	Malaysia	1	0%
45	Belgium	1	0%
46	Argentina	1	0%
47	Czech Republic	1	0%