Year	% of GDP
1981	16.156684675589993
1982	13.871113187760887
1983	14.710572582075157
1984	16.94246935344987
1985	17.022123267371867
1986	18.56612320937157
1987	18.541532615047775
1988	19.99936371917047
1989	19.739889582246718
1990	19.393213143787623
1991	20.965141175608906
1992	20.77966454148859
1993	22.3031303689154
1994	24.07566585701599
1995	25.946041662664815
1996	28.88672137316589
1997	35.086145735911565
1998	37.80686839882146
1999	38.411158735542564
2000	43.3442192873228
2001	41.15550150745465
2002	40.00567994402893
2003	42.305018371271196
2004	41.82684099079994
2005	41.23003921589544
2006	41.24545937050842
2007	38.01418633780757
2008	33.356833243739196
2009	30.219525599589158
2010	32.874829719567806
2011	29.10542887756671
2012	27.467073856730007
2013	26.177419809652395
2014	27.354504190307082
2015	27.2080572386549
2016	26.673003343868253
2017	29.55229085502617
2018	30.213605373658297
2019	28.382920012203066
2020	25.202839310203156
2021	25.752034916018662
2022	28.387401545793896
2023	26.653691785789558