25 years if you include 1987
There are 23 years between 1988 and 2011.
40 years is in between 1971 and 2011.
17 years.
2011 -1969=42
As of 2011, the leap years since 1986 have been: 1988 1992 1996 2000 2004 2008 This is a total of six leap years.
2014 - 1986 = 28 years.
2011 - 1986 = 25
2011-1986=25
25 years if you include 1987
There are 24 years between 1986 and 2010.
27
24
23
26
2079 - 2011 = 68 years.
There are 23 years between 1988 and 2011.