For the purposes of this Article, any township having a population of less than 100,000 may levy annually a tax extendable at rate of not more than 0.02% of the assessed valuation of all taxable property in the township as equalized for State and county purposes for the current year to provide revenue for the purpose of fire protection, rescue, and emergency vehicles and equipment. This tax shall be in addition to all other taxes authorized by law to be levied and collected in the township and shall be in addition to the amount authorized to be levied for general purposes.