Calculate number of rows with current month & year in Google Sheets or Excel

Question

I have one row filled with dates in the format MM/dd/yyyy (with header row), such as:

DATES
5/12/2015
4/12/2012
5/7/2015
5/7/2014

I would like

Answer 1

With data in A1 through A20

=SUMPRODUCT((MONTH(A1:A20)=MONTH(TODAY()))*(YEAR(A1:A20)=YEAR(TODAY())))