Rank	Countries/Territories	Count	Percent
1	United States	406	31.8%
2	China	321	25.2%
3	Germany	56	4.4%
4	France	45	3.5%
5	Norway	42	3.3%
6	United Kingdom	39	3.1%
7	Korea, Republic of	34	2.7%
8	Japan	31	2.4%
9	Canada	29	2.3%
10	India	22	1.7%
11	Netherlands	20	1.6%
12	Taiwan	19	1.5%
13	Indonesia	16	1.3%
14	Brazil	16	1.3%
15	Singapore	15	1.2%
16	Viet Nam	14	1.1%
17	Spain	13	1%
18	Australia	12	0.9%
19	Hong Kong	11	0.9%
20	Iran, Islamic Republic of	10	0.8%
21	Malaysia	9	0.7%
22	United Arab Emirates	8	0.6%
23	Cyprus	6	0.5%
24	Ecuador	5	0.4%
25	Israel	5	0.4%
26	Italy	5	0.4%
27	Russia	5	0.4%
28	Peru	5	0.4%
29	Qatar	4	0.3%
30	Turkey	4	0.3%
31	Malta	4	0.3%
32	Austria	4	0.3%
33		4	0.3%
34	Denmark	3	0.2%
35	Ireland	3	0.2%
36	Slovenia	3	0.2%
37	Portugal	3	0.2%
38	Philippines	2	0.2%
39	Romania	2	0.2%
40	Sweden	2	0.2%
41	Nigeria	2	0.2%
42	Egypt	2	0.2%
43	Bulgaria	2	0.2%
44	Chile	1	0.1%
45	Argentina	1	0.1%
46	Bangladesh	1	0.1%
47	Czech Republic	1	0.1%
48	Ghana	1	0.1%
49	Pakistan	1	0.1%
50	Mexico	1	0.1%
51	Jordan	1	0.1%
52	Kenya	1	0.1%
53	Thailand	1	0.1%
54	Tunisia	1	0.1%
55	South Africa	1	0.1%