FL Tax Lien certs with multiple years

[Joe Mclain]

I have found an OTC FL Tax cert that I am interested in.   There are 3 years of this certificate available so if I buy the 2011-12 certificate, that is at least 2 years old and will enable me to initiate the Tax Deed Process.   Can someone explain what happens to the 2012-13 and the 2013-14 tax certificates?   How do these cert holders get paid?   

Thanks,

Joe