Rank	Countries/Territories	Count	Percent
1	United States	451	35.5%
2	China	422	33.2%
3	Germany	91	7.2%
4	Korea, Republic of	23	1.8%
5	India	20	1.6%
6	Japan	20	1.6%
7	United Kingdom	16	1.3%
8	Iran, Islamic Republic of	15	1.2%
9	Netherlands	15	1.2%
10	Australia	14	1.1%
11	Singapore	14	1.1%
12	Portugal	11	0.9%
13	France	11	0.9%
14	Canada	10	0.8%
15	Taiwan	10	0.8%
16	Thailand	9	0.7%
17	Turkey	8	0.6%
18	Israel	8	0.6%
19	Italy	8	0.6%
20	Ireland	7	0.6%
21	Russia	6	0.5%
22	Viet Nam	6	0.5%
23	Sweden	6	0.5%
24	Spain	6	0.5%
25	Romania	5	0.4%
26	Philippines	4	0.3%
27	Switzerland	4	0.3%
28	Greece	4	0.3%
29	Czech Republic	4	0.3%
30	Ecuador	4	0.3%
31	Egypt	3	0.2%
32	Belgium	3	0.2%
33	Malaysia	3	0.2%
34	Mauritius	2	0.2%
35	Brazil	2	0.2%
36	Bulgaria	2	0.2%
37	Bangladesh	2	0.2%
38	Hong Kong	2	0.2%
39	Hungary	2	0.2%
40	Trinidad and Tobago	2	0.2%
41	Sri Lanka	2	0.2%
42	South Africa	1	0.1%
43	Poland	1	0.1%
44	Ghana	1	0.1%
45	Cyprus	1	0.1%
46	Albania	1	0.1%
47	Argentina	1	0.1%
48	Chile	1	0.1%
49	Mexico	1	0.1%
50	Mongolia	1	0.1%
51	Norway	1	0.1%
52	Lebanon	1	0.1%
53	Indonesia	1	0.1%
54	Jamaica	1	0.1%