These dates are a little less than two years apart. More precisely 1.92 years apart.
Including 1980, there are 9 leap years between 1980 and 2014. They are 1980, 1984, 1988, 1992, 1996, 2000, 2004, 2008 and 2012.
Girls - 2012 I Saw You 3-11 was released on: USA: 16 March 2014 Netherlands: 17 March 2014 (limited) Spain: 17 March 2014
Once We Had a River - 2014 was released on: USA: 20 March 2014
Girls - 2012 Role-Play 3-10 was released on: USA: 9 March 2014 Netherlands: 10 March 2014 (limited) Spain: 10 March 2014
LakeShow - 2012 2014-03-03 was released on: USA: 3 March 2014
LakeShow - 2012 2014-03-04 was released on: USA: 4 March 2014
LakeShow - 2012 2014-03-05 was released on: USA: 5 March 2014
LakeShow - 2012 2014-03-06 was released on: USA: 6 March 2014
LakeShow - 2012 2014-03-07 was released on: USA: 7 March 2014
LakeShow - 2012 2014-03-09 was released on: USA: 9 March 2014
The Cycle - 2012 2014-03-10 was released on: USA: 10 March 2014
730 days if you include the last day, March 31 2014, in the sum. Use the calculator at the link below to do other similar calculations.