Rank	Countries/Territories	Count	Percent
1	United States	561	37.3%
2	China	488	32.4%
3	Germany	101	6.7%
4	Japan	32	2.1%
5	India	31	2.1%
6	Belgium	30	2%
7	Brazil	23	1.5%
8	France	22	1.5%
9	Sweden	22	1.5%
10	Netherlands	20	1.3%
11	United Kingdom	18	1.2%
12	Canada	13	0.9%
13	Switzerland	12	0.8%
14	Malaysia	11	0.7%
15	Korea, Republic of	11	0.7%
16	Australia	9	0.6%
17	Singapore	9	0.6%
18	Turkey	7	0.5%
19	Italy	7	0.5%
20	Russia	6	0.4%
21	Viet Nam	6	0.4%
22	Ireland	5	0.3%
23	Hong Kong	5	0.3%
24	Cyprus	4	0.3%
25	Ecuador	4	0.3%
26	Bulgaria	4	0.3%
27	Iran, Islamic Republic of	4	0.3%
28	Mexico	3	0.2%
29	Argentina	3	0.2%
30	Colombia	3	0.2%
31	Romania	3	0.2%
32	Taiwan	3	0.2%
33	South Africa	2	0.1%
34	Thailand	2	0.1%
35	Ukraine	2	0.1%
36	Bangladesh	2	0.1%
37	Egypt	2	0.1%
38	Mongolia	2	0.1%
39	Nicaragua	2	0.1%
40	Pakistan	1	0.1%
41	Saudi Arabia	1	0.1%
42	Mauritius	1	0.1%
43	Latvia	1	0.1%
44	Lithuania	1	0.1%
45	Estonia	1	0.1%
46	Finland	1	0.1%
47	Indonesia	1	0.1%
48	Uganda	1	0.1%
49	Zambia	1	0.1%
50	Trinidad and Tobago	1	0.1%
51	Tanzania, United Republic of	1	0.1%