Rank	Countries/Territories	Count	Percent
1	United States	540	33.9%
2	China	470	29.5%
3	Germany	137	8.6%
4	Japan	81	5.1%
5	Czech Republic	59	3.7%
6	Korea, Republic of	42	2.6%
7	Netherlands	33	2.1%
8	France	24	1.5%
9	Australia	20	1.3%
10	Canada	17	1.1%
11	United Kingdom	16	1%
12	Singapore	14	0.9%
13	Ukraine	12	0.8%
14	Switzerland	11	0.7%
15	Iran, Islamic Republic of	11	0.7%
16	Italy	10	0.6%
17	Spain	10	0.6%
18	India	9	0.6%
19	Cyprus	8	0.5%
20	Taiwan	7	0.4%
21	Argentina	5	0.3%
22	Ireland	5	0.3%
23	Hong Kong	5	0.3%
24	Pakistan	4	0.3%
25	Poland	4	0.3%
26	Nigeria	3	0.2%
27	Malaysia	3	0.2%
28	Israel	3	0.2%
29	Denmark	3	0.2%
30	Brazil	2	0.1%
31	Mexico	2	0.1%
32	Latvia	2	0.1%
33	Lithuania	2	0.1%
34	Portugal	2	0.1%
35	Russia	2	0.1%
36	Turkey	2	0.1%
37	Sweden	2	0.1%
38	Sri Lanka	1	0.1%
39	Slovakia	1	0.1%
40	United Arab Emirates	1	0.1%
41	Saudi Arabia	1	0.1%
42	Serbia	1	0.1%
43	Norway	1	0.1%
44	New Zealand	1	0.1%
45	Luxembourg	1	0.1%
46	Macao	1	0.1%
47	Jordan	1	0.1%
48	Bangladesh	1	0.1%
49	Indonesia	1	0.1%