Year	Percent of GDP (Units)
1980	20.740
1981	20.488
1982	20.646
1983	19.727
1984	20.699
1985	22.282
1986	21.736
1987	23.655
1988	24.711
1989	25.645
1990	28.172
1991	23.586
1992	24.921
1993	24.007
1994	26.752
1995	27.348
1996	25.623
1997	27.665
1998	26.186
1999	30.957
2000	25.677
2001	29.910
2002	30.251
2003	30.839
2004	35.096
2005	37.429
2006	38.999
2007	41.951
2008	38.423
2009	39.257
2010	39.785
2011	39.590
2012	38.348
2013	34.024
2014	34.268
2015	32.117
2016	30.172
2017	30.982
2018	32.343
2019	30.096
2020	28.922
2021	32.116
2022	33.024
2023	32.986
2024	33.333
2025	33.186
2026	32.959
2027	32.732
2028	32.437
2029	32.077