Year % of GDP 1996 0.7999992579923499 1997 0.7999994544512855 1998 0.6999988501150524 1999 0.6999990675101588 2000 0.6689521550224282 2001 0.6923276102620226 2002 0.7954581243453517 2003 0.8218510578582477 2004 0.8441584648972295 2005 0.8016415317895802 2010 0.2860942891775539 2011 0.3129410262596411 2012 0.28139653456436214 2013 0.3282833438193461 2014 0.21111670305588348 2015 0.22788949681127518 2016 0.3070184528467106 2017 0.27470081133346663 2018 0.2349855251407526 2019 0.22096150517312332 2020 0.25549040843763027 2021 0.29112315238079944 2022 0.21983960102095304