Rank	Countries/Territories	Count	Percent
1	United States	316	43.7%
2	China	180	24.9%
3	Germany	55	7.6%
4	Netherlands	17	2.4%
5	Taiwan	16	2.2%
6	Russia	15	2.1%
7	Canada	14	1.9%
8	Japan	13	1.8%
9	Korea, Republic of	10	1.4%
10	Singapore	10	1.4%
11	Pakistan	7	1%
12	United Kingdom	7	1%
13	France	7	1%
14	India	6	0.8%
15	Australia	6	0.8%
16	Belgium	4	0.6%
17	Ireland	4	0.6%
18	South Africa	4	0.6%
19	Indonesia	3	0.4%
20	Cameroon	3	0.4%
21	Egypt	2	0.3%
22	Austria	2	0.3%
23	Tanzania, United Republic of	2	0.3%
24	Turkey	2	0.3%
25	Kenya	2	0.3%
26	Nicaragua	2	0.3%
27	Nigeria	2	0.3%
28	Malaysia	2	0.3%
29	Mauritius	2	0.3%
30	Nepal	1	0.1%
31	Latvia	1	0.1%
32	Philippines	1	0.1%
33	Bulgaria	1	0.1%
34	Colombia	1	0.1%
35	Cyprus	1	0.1%
36	Ecuador	1	0.1%
37	Argentina	1	0.1%