Year	Percent of GDP (Units)
1980	20.202
1981	21.113
1982	20.407
1983	19.381
1984	20.501
1985	19.872
1986	18.618
1987	18.953
1988	20.443
1989	19.652
1990	17.870
1991	15.609
1992	14.768
1993	14.636
1994	17.138
1995	18.555
1996	19.341
1997	19.877
1998	19.704
1999	20.861
2000	23.161
2001	21.885
2002	21.471
2003	21.699
2004	23.729
2005	24.561
2006	25.038
2007	24.732
2008	24.221
2009	19.050
2010	19.918
2011	21.438
2012	21.337
2013	21.766
2014	22.551
2015	20.326
2016	19.673
2017	20.748
2018	21.000
2019	21.089
2020	20.658
2021	24.329
2022	24.997
2023	23.288
2024	23.895
2025	23.936
2026	23.777
2027	23.590
2028	23.284
2029	22.903