"If the PS2 was discontinued in 2012 and not 2013 how could it be "over 160 million units"

Ending production as of January 4, 2013.
https://www.theguardian.com/technology/2013/jan/04/playstation-2-manufacture-ends-years
The PS2 : 155.1 million (as of March 31, 2012)
Now with the last year : FY2012 (april 1st 2012 to march 31 2013) the PS2 has reached the 160M units.
PS2+PS3 = 16.5M









