From 1870 to 2011 there have been 34 leap years.
From 1870 to 2013
there have been 35 leap years.
16 leap years
There have been 25 leap years since 1910.
There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012
As of 2011, the leap years since 1986 have been: 1988 1992 1996 2000 2004 2008 This is a total of six leap years.
1
4
12
23
13
20 leap years.
130 years
There have been 13 leap years since 1959. The first one occurred in 1960, and the last was 2012. A leap year occurs every four years.