Rank	Countries/Territories	Count	Percent
1	United States	300	39.8%
2	China	183	24.3%
3	Germany	104	13.8%
4	India	50	6.6%
5	Korea, Republic of	12	1.6%
6	Egypt	11	1.5%
7	Japan	11	1.5%
8	Singapore	7	0.9%
9	Turkey	7	0.9%
10	Canada	6	0.8%
11	Indonesia	5	0.7%
12	Saudi Arabia	5	0.7%
13	Poland	4	0.5%
14		4	0.5%
15	Argentina	4	0.5%
16	Congo, The Democratic Republic of The	4	0.5%
17	Cyprus	4	0.5%
18	France	3	0.4%
19	Netherlands	3	0.4%
20	Ukraine	3	0.4%
21	United Kingdom	3	0.4%
22	Yemen	2	0.3%
23	Taiwan	2	0.3%
24	Russia	2	0.3%
25	Spain	2	0.3%
26	Sweden	2	0.3%
27	Philippines	2	0.3%
28	Ireland	2	0.3%
29	Italy	2	0.3%
30	Brazil	2	0.3%
31	Australia	1	0.1%
32	Guatemala	1	0.1%
33	Switzerland	1	0.1%