Rank	Countries/Territories	Count	Percent
1	United States	508	34.2%
2	China	379	25.5%
3	Germany	179	12.1%
4	France	38	2.6%
5	India	36	2.4%
6	Japan	33	2.2%
7	Russia	33	2.2%
8	Netherlands	24	1.6%
9	Korea, Republic of	20	1.3%
10	Singapore	16	1.1%
11	Norway	14	0.9%
12	Hong Kong	13	0.9%
13	Belgium	13	0.9%
14	Turkey	13	0.9%
15	United Kingdom	12	0.8%
16	Australia	12	0.8%
17	Iran, Islamic Republic of	11	0.7%
18	Ireland	10	0.7%
19	Canada	10	0.7%
20	Taiwan	10	0.7%
21	Ukraine	9	0.6%
22	Denmark	9	0.6%
23	Italy	7	0.5%
24	Indonesia	7	0.5%
25	Spain	7	0.5%
26	Saudi Arabia	7	0.5%
27	Viet Nam	6	0.4%
28	Mexico	5	0.3%
29	Greece	4	0.3%
30	Egypt	4	0.3%
31	Ethiopia	3	0.2%
32	Colombia	3	0.2%
33	Cyprus	3	0.2%
34	Czech Republic	3	0.2%
35	Portugal	3	0.2%
36	Thailand	2	0.1%
37	Bangladesh	2	0.1%
38	Argentina	2	0.1%
39	Brazil	2	0.1%
40	Pakistan	2	0.1%
41	Palestine, State of	2	0.1%
42	Peru	1	0.1%
43	Philippines	1	0.1%
44	Malaysia	1	0.1%
45	New Zealand	1	0.1%
46	Dominican Republic	1	0.1%
47	Georgia	1	0.1%
48	Albania	1	0.1%
49	Switzerland	1	0.1%
50	Syrian Arab Republic	1	0.1%