4006
There are 50 years between 1961 and 2011. You can work this out by subtracting 1961 from 2011.
2011-1996=15 There are 15 years between 1996 and 2011.
25
24
2079 - 2011 = 68 years.
40 years is in between 1971 and 2011.
-78
20 years..
29 years:)
There were 4 & 3/4 leap years between 1994 and 2011.
3507 + 2011=5 518 years