Year GDP 1990 0.51664373622089 1991 0.50220607560112 1992 0.515867162690612 1993 0.521835520187168 1994 0.529727015925241 1995 0.52126988388941 1996 0.507074186554071 1997 0.506497901297669 1998 0.50586507097652 1999 0.503008350624503 2000 0.485727222020264 2001 0.479915332562292 2002 0.480469853677033 2003 0.476498144918027 2004 0.473138252985439 2005 0.466774720822857 2006 0.461731079021359 2007 0.471242159221086 2008 0.497136512035479 2009 0.526061372342338 2010 0.533207175942947 2011 0.552960157394409 2012 0.568205385260773 2013 0.559820488634631 2014 0.542055920926051 2015 0.516884225192376 2016 0.489893443799203 2017 0.46803081035614 2018 0.497522056102753 2019 0.495729207992554 2020 0.491933196783066 2021 0.501403868198395 2022 0.479895692703892 2023 0.470127945537058