A state intangibles tax is levied on the holders of intangible personal property in

the state. The tax base is market value of the item of property on the last day of

December; for most taxpayers, intangible holdings in December establish tax due

by April $15$ of the next year $($paid with the annual income tax return$).$ Tax rates

have been $0\mathrm{.}0025$ percent, but a phaseout of the tax begins in calendar year $2014.$

In that year, the rate will be $0\mathrm{.}00233$ and in the following year, $0\mathrm{.}00217.$

Fiscal year Ouly $1-$June $30)$ collections for the tax from $2006$ through $2012$

follow, along with estimates previously prepared for fiscal $2013$ and $2014$ and calen$-$

dar$-$year data on state personal income. Both income and collections are in millions.

Estimate revenue from the tax for fiscal years $2014,2015,$ and $2016$ using any

method that is appropriate. $($An independent commission has estimated state

personal income for the three years to equal $$48,660$ million in $2014,$$$52,800$ mil$-$

lion in $2015,$ and $$57,500$ million in $2016.)$ Describe the method you used and

indicate why it is better than other alternatives available.