Year annual % growth 1994 0.281624249371063 1995 0.911841002671892 1996 0.547851990835085 1997 2.91616845490022 1998 1.93967879356498 1999 3.3109896092012 2000 1.67060669256487 2001 1.99872674180624 2002 2.57199008472118 2003 2.46261036304701 2004 4.30610236080138 2005 4.32062002751672 2006 4.89903466839326 2007 5.26899208584986 2008 4.48709452946736 2009 4.39388244288854 2010 2.86710147229201 2011 3.58509357540815 2012 3.6134628628955 2013 2.41447698118537 2014 2.09620444130681 2015 1.8298579966137 2016 2.13607834598182 2017 3.29756057481501