Bob contributed to an IRA over the years. In some years his IRA contribution was deductible and in some years his contribution was not deductible. In total Bob contributed $50,000$ to his IRA. $30,000$ of the contributions were deducted and $20,000$ were not deducted.

The following information pertains to Bob$$s IRA

FMV of IRA

$1/1/2009100,000$

$12/31/200990,000$

$12/31/201080,000$

$12/31/201170,000$

Bob withdrew $$15,000$ from his IRA in $2009,2010$ and $2011.$

How much of Bob$$s IRA withdrawl is taxable each year $2009,2010$ and $2011?$