Rank	Countries/Territories	Count	Percent
1	United States	451	49.6%
2	China	196	21.5%
3	Germany	61	6.7%
4	Canada	17	1.9%
5	Netherlands	16	1.8%
6	Singapore	16	1.8%
7	United Kingdom	14	1.5%
8	Japan	14	1.5%
9	South Africa	13	1.4%
10	Pakistan	13	1.4%
11	Iraq	9	1%
12	Ireland	7	0.8%
13	Cyprus	7	0.8%
14	France	7	0.8%
15	Korea, Republic of	6	0.7%
16	Oman	6	0.7%
17	Taiwan	4	0.4%
18	Portugal	4	0.4%
19	Ethiopia	4	0.4%
20	Italy	4	0.4%
21	Australia	4	0.4%
22	Ghana	3	0.3%
23	Kenya	3	0.3%
24	Iran, Islamic Republic of	3	0.3%
25	India	2	0.2%
26	Bulgaria	2	0.2%
27	Argentina	2	0.2%
28	Romania	2	0.2%
29	Russia	2	0.2%
30	Poland	2	0.2%
31	Lithuania	2	0.2%
32	Luxembourg	2	0.2%
33	Thailand	2	0.2%
34	Turkey	2	0.2%
35	Viet Nam	2	0.2%
36	Yemen	2	0.2%
37	Ukraine	1	0.1%
38	Spain	1	0.1%
39	Nigeria	1	0.1%
40	Indonesia	1	0.1%