Was 1970 a leap year

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.

Including 2012, there have been 11.