Rank	Countries/Territories	Count	Percent
1	United States	371	55.1%
2	China	96	14.3%
3	Germany	50	7.4%
4	Canada	16	2.4%
5	Netherlands	13	1.9%
6	South Africa	12	1.8%
7	Japan	12	1.8%
8	Singapore	11	1.6%
9	United Kingdom	9	1.3%
10	Iraq	9	1.3%
11	Ireland	7	1%
12	France	7	1%
13	Korea, Republic of	6	0.9%
14	Oman	6	0.9%
15	Cyprus	5	0.7%
16	Ethiopia	4	0.6%
17	Italy	4	0.6%
18	Taiwan	4	0.6%
19	Kenya	3	0.4%
20	Iran, Islamic Republic of	3	0.4%
21	India	2	0.3%
22	Australia	2	0.3%
23	Bulgaria	2	0.3%
24	Thailand	2	0.3%
25	Turkey	2	0.3%
26	Poland	2	0.3%
27	Portugal	2	0.3%
28	Lithuania	2	0.3%
29	Luxembourg	2	0.3%
30	Nigeria	1	0.1%
31	Romania	1	0.1%
32	Pakistan	1	0.1%
33	Spain	1	0.1%
34	Argentina	1	0.1%
35	Ghana	1	0.1%
36	Indonesia	1	0.1%