Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.4 Evaluation Logarithms and the Change-of-Base Theorem - 4.4 Exercises - Page 458: 69

$106.6$ (thousands) the given logarithmic model continues to hold.

For year 2016, we have $x=2016-1950=66$, use the given model, we have: $f(66)=-273+90.6ln(66)\approx106.6$ (in thousands) To estimate for years beyond 2012, we must assume that the given logarithmic model continues to hold.