Rank	Countries/Territories	Count	Percent
1	United States	493	40.2%
2	China	401	32.7%
3	Germany	80	6.5%
4	Korea, Republic of	55	4.5%
5	Sweden	23	1.9%
6	Japan	21	1.7%
7	Australia	18	1.5%
8	Canada	17	1.4%
9	Kenya	14	1.1%
10	France	14	1.1%
11	Netherlands	12	1%
12	India	7	0.6%
13	Ireland	6	0.5%
14	Singapore	6	0.5%
15	Iran, Islamic Republic of	5	0.4%
16	Czech Republic	5	0.4%
17	Brazil	4	0.3%
18	Cyprus	4	0.3%
19	Spain	4	0.3%
20	Pakistan	4	0.3%
21	United Kingdom	4	0.3%
22	Oman	3	0.2%
23	Portugal	3	0.2%
24	Iraq	3	0.2%
25	Indonesia	3	0.2%
26	Hong Kong	2	0.2%
27	Saudi Arabia	2	0.2%
28	Philippines	2	0.2%
29	Mongolia	2	0.2%
30	Turkey	2	0.2%
31	Ukraine	1	0.1%
32	Mexico	1	0.1%
33	Poland	1	0.1%
34	Switzerland	1	0.1%
35	Romania	1	0.1%
36	South Africa	1	0.1%
37	Greece	1	0.1%