If in any year, beginning with the first Renewal Term year (each year being a “Subsequent Year”), Real Estate Taxes (as hereinafter defined) shall be greater than Real Estate Taxes for the Base Tax Year (as hereinafter defined), then Tenant shall pay, in addition to the Fixed Rent, and as Additional Rent for such subsequent years, an amount (“Tenant’s Tax Payment”) equal to Tenant’s Proportionate Share (as hereinafter defined) of such increases, as Additional Rent.