I A company;r has found that the number of private cars with current licenses can be used as a basis for estimating its production requirements. The relevant figures for the past nine years are as follows: No. of cars '000 2000 2001 2002 2003 2004 2005 2006 200? 2008 Using the method of least squares, you are required to: (a) estimate the number of private cars with current licenses in 2009. (b) provide an estimate for 2009 but assuming that because of other factors e.g. labour unrest, only 50% of the normal annual increase will be realized in 2000