Year annual % growth 1996 4.355844025568302 1997 2.804729633600232 1998 4.868819637827244 1999 1.7512793885376539 2000 3.801227616277785 2001 4.698496848911887 2002 5.054694764798825 2003 3.7827286905480833 2004 6.3404816331074585 2005 7.081155869601957 2006 6.097887133172321 2007 7.629864906244848 2008 5.869460235312673 2009 -2.6569765006534567 2010 0.25371421638683955 2011 2.526959914776654 2012 1.242009960868316 2013 1.663342653819356 2014 4.305246054622927 2015 5.1438861949806665 2016 3.4790087725796894 2017 5.786660527214551 2018 5.140029166743659 2019 4.8169119187023455 2020 -2.149897221037122 2021 5.680953090007449