Rank	Countries/Territories	Count	Percent
1	United States	538	41.5%
2	China	261	20.2%
3	Germany	77	5.9%
4	Canada	45	3.5%
5	Japan	44	3.4%
6	India	41	3.2%
7	Netherlands	34	2.6%
8	Ireland	28	2.2%
9	Australia	26	2%
10	United Kingdom	22	1.7%
11	Iran, Islamic Republic of	21	1.6%
12	Korea, Republic of	17	1.3%
13	Malaysia	16	1.2%
14	Singapore	16	1.2%
15	Switzerland	10	0.8%
16	Taiwan	10	0.8%
17	Russia	9	0.7%
18	Pakistan	9	0.7%
19	Brazil	7	0.5%
20	Cyprus	5	0.4%
21	Portugal	5	0.4%
22	Italy	5	0.4%
23	Mexico	4	0.3%
24	New Zealand	3	0.2%
25	France	3	0.2%
26	Turkey	3	0.2%
27	Ukraine	3	0.2%
28	Serbia	2	0.2%
29	Thailand	2	0.2%
30	Morocco	2	0.2%
31	Norway	2	0.2%
32	Romania	2	0.2%
33	Peru	2	0.2%
34	Croatia	2	0.2%
35	Egypt	2	0.2%
36	Greece	2	0.2%
37	Hong Kong	1	0.1%
38	Ghana	1	0.1%
39	Czech Republic	1	0.1%
40	Colombia	1	0.1%
41	Bangladesh	1	0.1%
42	Argentina	1	0.1%
43	Armenia	1	0.1%
44	Mongolia	1	0.1%
45	Tunisia	1	0.1%
46	Slovakia	1	0.1%
47	Spain	1	0.1%
48	Sweden	1	0.1%
49	Viet Nam	1	0.1%
50	Saudi Arabia	1	0.1%
51	Senegal	1	0.1%