Rank	Countries/Territories	Count	Percent
1	United States	611	45.7%
2	China	243	18.2%
3	Germany	110	8.2%
4	India	56	4.2%
5	Russia	41	3.1%
6	Singapore	29	2.2%
7	Japan	27	2%
8	Canada	25	1.9%
9	France	23	1.7%
10	Greece	17	1.3%
11	Hong Kong	15	1.1%
12	Indonesia	13	1%
13	Ecuador	12	0.9%
14	Netherlands	11	0.8%
15	Cyprus	10	0.7%
16	Ghana	10	0.7%
17	Iraq	9	0.7%
18	Iran, Islamic Republic of	8	0.6%
19	Australia	6	0.4%
20	Jordan	6	0.4%
21	Philippines	6	0.4%
22	Nigeria	5	0.4%
23	Bangladesh	5	0.4%
24	Viet Nam	5	0.4%
25	Ethiopia	4	0.3%
26	Mexico	4	0.3%
27	Taiwan	3	0.2%
28	Thailand	3	0.2%
29	United Kingdom	3	0.2%
30	Uganda	2	0.1%
31	Ukraine	2	0.1%
32	Tanzania, United Republic of	2	0.1%
33	Portugal	2	0.1%
34	Libya	2	0.1%
35	Ireland	2	0.1%
36	Italy	2	0.1%
37	Egypt	1	0.1%
38	Brazil	1	0.1%
39	Lithuania	1	0.1%
40	Switzerland	1	0.1%