Rank	Countries/Territories	Count	Percent
1	United States	352	38.3%
2	China	218	23.7%
3	Germany	108	11.8%
4	Singapore	35	3.8%
5	United Kingdom	22	2.4%
6	Netherlands	15	1.6%
7	Greece	14	1.5%
8	India	14	1.5%
9	France	13	1.4%
10	Japan	11	1.2%
11	Canada	11	1.2%
12	Ukraine	9	1%
13	Australia	8	0.9%
14	Hungary	8	0.9%
15	Iran, Islamic Republic of	7	0.8%
16	Russia	6	0.7%
17	Sweden	6	0.7%
18	Romania	5	0.5%
19	Poland	5	0.5%
20	Egypt	5	0.5%
21	Brazil	5	0.5%
22	Belgium	4	0.4%
23	Korea, Republic of	4	0.4%
24	Malaysia	3	0.3%
25	Botswana	3	0.3%
26	Cyprus	3	0.3%
27	Colombia	2	0.2%
28	Argentina	2	0.2%
29	Hong Kong	2	0.2%
30	Portugal	2	0.2%
31	Philippines	2	0.2%
32	Taiwan	2	0.2%
33	Tanzania, United Republic of	2	0.2%
34	Thailand	2	0.2%
35	Spain	2	0.2%
36	Tunisia	1	0.1%
37	South Africa	1	0.1%
38	Puerto Rico	1	0.1%
39	Finland	1	0.1%
40	Israel	1	0.1%
41	Italy	1	0.1%