Rank	Countries/Territories	Count	Percent
1	United States	272	43%
2	China	142	22.5%
3	Germany	52	8.2%
4	Iran, Islamic Republic of	21	3.3%
5	Netherlands	14	2.2%
6	Korea, Republic of	13	2.1%
7	Ireland	13	2.1%
8	India	12	1.9%
9	Canada	12	1.9%
10	Japan	9	1.4%
11	Australia	8	1.3%
12	Singapore	8	1.3%
13	France	7	1.1%
14	Egypt	7	1.1%
15	United Arab Emirates	6	0.9%
16	United Kingdom	6	0.9%
17	Saudi Arabia	4	0.6%
18	Taiwan	3	0.5%
19	Cyprus	3	0.5%
20	Belgium	2	0.3%
21	Finland	2	0.3%
22	Kenya	2	0.3%
23	Indonesia	2	0.3%
24	Sweden	2	0.3%
25	Switzerland	2	0.3%
26	Libya	2	0.3%
27	Romania	1	0.2%
28	Spain	1	0.2%
29	Guatemala	1	0.2%
30	Israel	1	0.2%
31	Ethiopia	1	0.2%
32	Brazil	1	0.2%