What equation models the data? What are the domain and range of the equation? Do you think your equation is a good fit for the data?

2005 2.63
2006 3.26
2007 3.54
2008 3.769
2009 2.13
2010 2.956
2011 4.259
2012 4.16
2013 3.78
2014 3.99
2015 3.10