approval challenge

Last week president Trump began his 1st term with an approval rating of 45% which subsequently fell to 42%, as measured by Gallup.

The following chart puts this into the historical context, depicting job approval for US presidents after WW2. Notice that all began office with a rating above 50%. I depicted Trump's entry with an orange mark.



Your challenge, should you accept it, is to guess where Trump's approval will be
i) a year from now and
ii) 3.5 years from now, i.e. during summer of (re)election year 2020.