Annual % of GDP
1975 25.096841566870374
1976 22.51582257728922
1977 22.930279774204777
1978 23.535484975475544
1979 22.572409554093447
1980 20.480456656127004
1981 18.485164465911872
1982 18.559629564358755
1983 18.392810160916994
1984 20.07593850652026
1985 20.874393527438837
1986 21.791217748097633
1987 21.68978997073075
1988 22.83530546496802
1989 22.297780638302147
1990 21.805076573877937
1991 21.197830425091475
1992 19.343728027904938
1993 19.188909256250415
1994 18.705030732349005
1995 21.3142474727056
1996 20.999628545505523
1997 22.068688563576874
1998 22.70105022574922
1999 22.288425056048542
2000 22.32915226268794
2001 22.081658768337324
2002 22.964168663730625
2003 23.62908281017035
2004 22.807877665445925
2005 22.123066771184966
2006 21.715753260634692
2007 21.013845618227492
2008 19.5605358727822
2009 19.224215113244313
2010 18.64331656828014
2011 17.855489343382356
2012 18.516978316375187
2013 19.253607549227052
2014 19.577920916415
2015 21.008190654804242
2016 21.919998013812197
2017 22.176032838985357
2018 22.346379440774523
2019 22.9344685004264
2020 21.089406844683037
2021 22.34620681534215
2022 22.09427410937136
2023 22.853846201192514