Rank	Countries/Territories	Count	Percent
1	United States	181	31.5%
2	China	173	30.1%
3	Germany	47	8.2%
4	South Africa	18	3.1%
5	Russia	18	3.1%
6	Japan	16	2.8%
7	Turkey	13	2.3%
8	Singapore	12	2.1%
9	France	12	2.1%
10	Netherlands	10	1.7%
11	Nigeria	6	1%
12	Korea, Republic of	6	1%
13	Iraq	6	1%
14	Argentina	6	1%
15	Bangladesh	6	1%
16	Ukraine	5	0.9%
17	Mexico	4	0.7%
18	Bulgaria	4	0.7%
19	Colombia	3	0.5%
20	India	3	0.5%
21	Iran, Islamic Republic of	3	0.5%
22	Egypt	3	0.5%
23	United Kingdom	3	0.5%
24	Taiwan	2	0.3%
25	Norway	2	0.3%
26	Hong Kong	2	0.3%
27	Cyprus	2	0.3%
28	Austria	2	0.3%
29	Belgium	1	0.2%
30	Canada	1	0.2%
31	Ireland	1	0.2%
32	Italy	1	0.2%
33	Poland	1	0.2%
34	Romania	1	0.2%