Rank	Countries/Territories	Count	Percent
1	United States	502	25.2%
2	China	471	23.6%
3	Japan	334	16.8%
4	Germany	183	9.2%
5	Singapore	70	3.5%
6	Netherlands	59	3%
7	Russia	52	2.6%
8	India	46	2.3%
9	Taiwan	31	1.6%
10	Canada	30	1.5%
11	France	25	1.3%
12	Korea, Republic of	24	1.2%
13	Ireland	19	1%
14	Egypt	11	0.6%
15	Greece	10	0.5%
16	Hong Kong	10	0.5%
17	Norway	9	0.5%
18	United Kingdom	9	0.5%
19	Ukraine	8	0.4%
20	Indonesia	7	0.4%
21	Iraq	7	0.4%
22	Australia	7	0.4%
23	Switzerland	6	0.3%
24	Turkey	5	0.3%
25	Cyprus	5	0.3%
26	Mexico	5	0.3%
27	Philippines	5	0.3%
28	Cameroon	4	0.2%
29	Romania	3	0.2%
30	Iran, Islamic Republic of	3	0.2%
31	Israel	3	0.2%
32	Spain	3	0.2%
33	Sweden	2	0.1%
34	Viet Nam	2	0.1%
35	Lebanon	2	0.1%
36	Poland	2	0.1%
37	Argentina	2	0.1%
38	Denmark	2	0.1%
39	Bangladesh	2	0.1%
40	Bosnia and Herzegovina	2	0.1%
41	Brazil	1	0.1%
42	Belgium	1	0.1%
43	Estonia	1	0.1%
44	Ethiopia	1	0.1%
45	Finland	1	0.1%
46	Peru	1	0.1%
47	Nigeria	1	0.1%
48	Italy	1	0.1%
49	Sri Lanka	1	0.1%
50	United Arab Emirates	1	0.1%