Rank	Countries/Territories	Count	Percent
1	United States	522	42.1%
2	China	314	25.3%
3	Germany	109	8.8%
4	India	71	5.7%
5	Korea, Republic of	35	2.8%
6	Japan	27	2.2%
7	United Kingdom	17	1.4%
8	Italy	16	1.3%
9	Canada	15	1.2%
10	Singapore	13	1%
11	Australia	11	0.9%
12	Netherlands	10	0.8%
13	Ireland	7	0.6%
14	Taiwan	7	0.6%
15	Iran, Islamic Republic of	5	0.4%
16	Argentina	5	0.4%
17	Cyprus	5	0.4%
18	Denmark	5	0.4%
19	Spain	4	0.3%
20	Lithuania	4	0.3%
21	Malaysia	4	0.3%
22	Hong Kong	3	0.2%
23	Norway	3	0.2%
24	Chile	3	0.2%
25	France	2	0.2%
26	Georgia	2	0.2%
27	Palestine, State of	2	0.2%
28	Sweden	2	0.2%
29	Switzerland	2	0.2%
30	Macao	2	0.2%
31	Mongolia	2	0.2%
32	Turkey	2	0.2%
33	Ukraine	2	0.2%
34	Thailand	1	0.1%
35	Tunisia	1	0.1%
36	Mexico	1	0.1%
37	Russia	1	0.1%
38	Greece	1	0.1%
39	Israel	1	0.1%
40	Finland	1	0.1%