The yearly sales (in millions of dollars) of an automobile manufacturing company during the period 2000-2011 are given below.

Year	Sales ($millions) y
2000	470
2001	485
2002	499
2003	515
2004	532
2005	532
2006	556
2007	576
2008	583
2009	587
2010	601
2011	605

a. Construct a time series plot. What type of pattern exists in the data?

b. Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series.

c. What is the sales forecast (in millions of dollars) for the year 2012?