Rank	Countries/Territories	Count	Percent
1	United States	259	42.7%
2	China	136	22.4%
3	Germany	52	8.6%
4	Iran, Islamic Republic of	21	3.5%
5	Netherlands	14	2.3%
6	Korea, Republic of	13	2.1%
7	Ireland	13	2.1%
8	Canada	12	2%
9	Japan	9	1.5%
10	India	8	1.3%
11	Singapore	8	1.3%
12	France	7	1.2%
13	Egypt	7	1.2%
14	Australia	7	1.2%
15	United Arab Emirates	6	1%
16	United Kingdom	6	1%
17	Saudi Arabia	4	0.7%
18	Taiwan	3	0.5%
19	Cyprus	3	0.5%
20	Belgium	2	0.3%
21	Finland	2	0.3%
22	Indonesia	2	0.3%
23	Kenya	2	0.3%
24	Libya	2	0.3%
25	Sweden	2	0.3%
26	Switzerland	2	0.3%
27	Spain	1	0.2%
28	Israel	1	0.2%
29	Guatemala	1	0.2%
30	Ethiopia	1	0.2%
31	Brazil	1	0.2%