Rank	Countries/Territories	Count	Percent
1	United States	149	32.5%
2	China	126	27.5%
3	Germany	35	7.6%
4	South Africa	18	3.9%
5	Russia	15	3.3%
6	Japan	13	2.8%
7	Singapore	12	2.6%
8	France	12	2.6%
9	Netherlands	8	1.7%
10	Turkey	7	1.5%
11	Nigeria	6	1.3%
12	Korea, Republic of	6	1.3%
13	Iraq	6	1.3%
14	Argentina	6	1.3%
15	Bangladesh	6	1.3%
16	Mexico	4	0.9%
17	Bulgaria	4	0.9%
18	India	3	0.7%
19	Colombia	3	0.7%
20	Cyprus	2	0.4%
21	Egypt	2	0.4%
22	Austria	2	0.4%
23	Iran, Islamic Republic of	2	0.4%
24	Norway	2	0.4%
25	Taiwan	2	0.4%
26	Poland	1	0.2%
27	Romania	1	0.2%
28	United Kingdom	1	0.2%
29	Canada	1	0.2%
30	Ireland	1	0.2%
31	Italy	1	0.2%
32	Belgium	1	0.2%