Rank	Countries/Territories	Count	Percent
1	United States	233	40.9%
2	China	136	23.9%
3	Germany	46	8.1%
4	Netherlands	17	3%
5	Taiwan	16	2.8%
6	Russia	15	2.6%
7	Canada	14	2.5%
8	Japan	10	1.8%
9	Korea, Republic of	10	1.8%
10	Singapore	10	1.8%
11	Pakistan	7	1.2%
12	France	7	1.2%
13	Australia	6	1.1%
14	India	6	1.1%
15	Belgium	4	0.7%
16	Ireland	4	0.7%
17	South Africa	4	0.7%
18	Cameroon	3	0.5%
19	Kenya	2	0.4%
20	Malaysia	2	0.4%
21	Mauritius	2	0.4%
22	Nicaragua	2	0.4%
23	Nigeria	2	0.4%
24	Tanzania, United Republic of	2	0.4%
25	Turkey	2	0.4%
26	United Kingdom	1	0.2%
27	Philippines	1	0.2%
28	Nepal	1	0.2%
29	Latvia	1	0.2%
30	Bulgaria	1	0.2%
31	Indonesia	1	0.2%
32	Colombia	1	0.2%
33	Ecuador	1	0.2%