The Affordable Housing worksheet contains information about housing in $169$ towns from $2011$ to $2022.$

We would like to calculate a desirability index score for each observation and place it in the L column of the dataset. The desirability index calculation is different for towns with a niceness index score above and below $37.$

For towns with a niceness $>37$:

$[$Total Assisted Units $($I column$)/2010$ census units $($D column$)]+0\mathrm{.}97$

For the remaining towns:

Total Assisted Units $($I column$)/2010$ census units $($D column$)$

Essentially, you are calculating a desirability index by taking the $($total assisted units $/2010$ census$)$ for each row, and adding a $0\mathrm{.}97$ premium if the niceness index exceeds $37.$

What is the average value in the desirability column? $($round to $3$ digits$)$