Housing starts are the number of new residential construction projects that have begun during any given month. It is considered to be a leading indicator of economic strength. The following table contains a portion of monthly data on housing starts (in 1,000s) in the U.S. from 2011–2017.

Period                      Housing Starts
Jan-11...........................................40.2
Feb-11..........................................35.4
⋮...........................................................⋮
Dec-17..........................................81.3

Create the time and the monthly dummy variables to estimate an exponential seasonal trend model. Forecast housing starts for January and February of 2018.