Rank	Countries/Territories	Count	Percent
1	United States	405	31.4%
2	China	332	25.7%
3	Germany	128	9.9%
4	Japan	43	3.3%
5	Korea, Republic of	40	3.1%
6	Mexico	34	2.6%
7	France	34	2.6%
8	Iran, Islamic Republic of	22	1.7%
9	Netherlands	22	1.7%
10	United Kingdom	22	1.7%
11	India	19	1.5%
12	Canada	19	1.5%
13	Singapore	15	1.2%
14	Italy	13	1%
15	Poland	13	1%
16	Australia	12	0.9%
17	Hong Kong	9	0.7%
18	Taiwan	8	0.6%
19	Turkey	8	0.6%
20	Egypt	7	0.5%
21	Romania	6	0.5%
22	Russia	6	0.5%
23	Spain	6	0.5%
24	Austria	5	0.4%
25	Ireland	5	0.4%
26	Portugal	4	0.3%
27	New Zealand	4	0.3%
28	Ukraine	4	0.3%
29	Thailand	4	0.3%
30	Switzerland	4	0.3%
31	Sweden	3	0.2%
32	Lithuania	3	0.2%
33	Luxembourg	3	0.2%
34	Brazil	3	0.2%
35	Denmark	3	0.2%
36	Cyprus	2	0.2%
37	Macao	2	0.2%
38	Malaysia	2	0.2%
39	Mongolia	2	0.2%
40	Jordan	2	0.2%
41	Venezuela, Bolivarian Republic of	2	0.2%
42	Viet Nam	1	0.1%
43	Zimbabwe	1	0.1%
44	South Africa	1	0.1%
45	United Arab Emirates	1	0.1%
46	Mauritius	1	0.1%
47	Norway	1	0.1%
48	Pakistan	1	0.1%
49	Saudi Arabia	1	0.1%
50	Belgium	1	0.1%
51	Indonesia	1	0.1%