Year	% of GDP
1975	21.821057201400425
1976	22.422457454691262
1977	23.005429440842544
1978	23.8781040108686
1979	23.856363641155948
1980	22.608962276079705
1981	22.530369632365332
1982	21.576960800021844
1983	20.939706866172727
1984	22.40121030100844
1985	21.63049744937061
1986	21.13736326850441
1987	21.537458313759522
1988	22.533262573665525
1989	22.208200359588993
1990	21.546547927946015
1991	20.966220733658155
1992	19.91781331977139
1993	19.566652337836157
1994	20.414156448528498
1995	21.16110211623937
1996	22.768167388063585
1997	23.54262054511788
1998	23.897652728733505
1999	23.330342248020067
2000	23.509410075864462
2001	22.69054266489747
2002	21.90118780070447
2003	21.531550556178157
2004	22.135067651231655
2005	22.357441481917476
2006	23.14196489135942
2007	22.64331389787792
2008	21.001642522116768
2009	19.247765418931326
2010	20.38306481163652
2011	20.974729059216727
2012	21.52870580692696
2013	21.602415310540263
2014	22.303309391362614
2015	22.669594196803285
2016	22.264743011625725
2017	22.874607941121617
2018	22.99051659008282
2019	23.2566759533184
2020	22.450868236664377
2021	23.551035108444584
2022	23.154625740280434