Rank	Countries/Territories	Count	Percent
1	United States	534	38.9%
2	China	304	22.2%
3	Germany	138	10.1%
4	France	50	3.6%
5	United Kingdom	43	3.1%
6	Netherlands	31	2.3%
7	Canada	26	1.9%
8	Russia	22	1.6%
9	Ireland	19	1.4%
10	Japan	17	1.2%
11	Singapore	15	1.1%
12	India	13	0.9%
13	Australia	13	0.9%
14	Korea, Republic of	10	0.7%
15	Poland	9	0.7%
16	Sweden	9	0.7%
17	Italy	8	0.6%
18	Denmark	8	0.6%
19	Iran, Islamic Republic of	7	0.5%
20	Romania	7	0.5%
21	Turkey	7	0.5%
22	Taiwan	5	0.4%
23	Saudi Arabia	5	0.4%
24	Egypt	5	0.4%
25	Finland	5	0.4%
26	Hong Kong	5	0.4%
27	Hungary	4	0.3%
28	Israel	4	0.3%
29	Nigeria	4	0.3%
30	South Africa	4	0.3%
31	Spain	4	0.3%
32	Malaysia	3	0.2%
33	Belgium	3	0.2%
34	Cyprus	3	0.2%
35	Czech Republic	3	0.2%
36	Algeria	2	0.1%
37	Brazil	2	0.1%
38	Ghana	2	0.1%
39	Malta	2	0.1%
40	Indonesia	2	0.1%
41	Norway	2	0.1%
42	Pakistan	2	0.1%
43	Tunisia	2	0.1%
44	Viet Nam	2	0.1%
45	Ukraine	1	0.1%
46	Switzerland	1	0.1%
47	Sri Lanka	1	0.1%
48	Portugal	1	0.1%
49	Iraq	1	0.1%
50	Bulgaria	1	0.1%
51	Argentina	1	0.1%