Year	% of GDP
1970	67.9696112025951
1971	69.3765887244137
1972	69.84753589701629
1973	70.51690436741455
1974	70.26162570413307
1975	73.73048443435036
1976	73.71240349085531
1977	75.12451351336958
1978	75.65561236460135
1979	77.12666129583222
1980	77.57058653403027
1981	80.36616552676799
1982	80.83541098145196
1983	81.0201693712206
1984	79.84624273013053
1985	80.10696602878265
1986	79.10210012045478
1987	78.6081123443085
1988	75.94461910336369
1989	74.66725188791142
1990	74.41249460160397
1991	75.65185866937875
1992	75.10395908204347
1993	74.95552595889033
1994	74.4172306467761
1995	74.35905232147412
1996	75.19724705780236
1997	73.81543630899392
1998	74.01177351586553
1999	73.3548596907402
2000	73.35238344871057
2001	73.71909649463615
2002	73.6751521193138
2003	73.67782810965284
2004	72.43879028245092
2005	72.2823296271162
2006	71.98696607581388
2007	71.26156331913059
2008	73.39043750964838
2009	75.5647485170553
2010	75.17076742557487
2011	75.59205868162114
2012	76.24712338742026
2013	76.77395133374058
2014	76.04501005326756
2015	74.95403183190649
2016	74.55358274277218
2017	74.50460071798658
2018	74.91955236247823
2019	74.36287828807866
2020	73.86356135209643
2021	72.52429431729878
2022	74.56780660600776
2023	75.60428110947362