Rank	Countries/Territories	Count	Percent
1	United States	506	33.9%
2	China	426	28.5%
3	Germany	137	9.2%
4	Japan	81	5.4%
5	Czech Republic	52	3.5%
6	Korea, Republic of	42	2.8%
7	Netherlands	31	2.1%
8	Australia	18	1.2%
9	France	18	1.2%
10	Canada	17	1.1%
11	United Kingdom	16	1.1%
12	Singapore	14	0.9%
13	Ukraine	12	0.8%
14	Switzerland	11	0.7%
15	Spain	10	0.7%
16	Italy	10	0.7%
17	Iran, Islamic Republic of	10	0.7%
18	India	9	0.6%
19	Cyprus	7	0.5%
20	Taiwan	7	0.5%
21	Argentina	5	0.3%
22	Ireland	5	0.3%
23	Hong Kong	4	0.3%
24	Pakistan	4	0.3%
25	Israel	3	0.2%
26	Denmark	3	0.2%
27	Nigeria	3	0.2%
28	Malaysia	3	0.2%
29	Mexico	2	0.1%
30	Latvia	2	0.1%
31	Lithuania	2	0.1%
32	Portugal	2	0.1%
33	Russia	2	0.1%
34	Brazil	2	0.1%
35	Sweden	2	0.1%
36	Turkey	2	0.1%
37	United Arab Emirates	1	0.1%
38	Sri Lanka	1	0.1%
39	Poland	1	0.1%
40	Slovakia	1	0.1%
41	Bangladesh	1	0.1%
42	Indonesia	1	0.1%
43	Saudi Arabia	1	0.1%
44	Serbia	1	0.1%
45	Norway	1	0.1%
46	New Zealand	1	0.1%
47	Luxembourg	1	0.1%
48	Macao	1	0.1%
49	Jordan	1	0.1%