Year	Percent of GDP (Units)
1980	10.955
1981	12.526
1982	12.400
1983	12.300
1984	12.264
1985	10.728
1986	8.725
1987	9.568
1988	9.193
1989	11.153
1990	9.934
1991	11.255
1992	12.859
1993	12.758
1994	14.423
1995	15.699
1996	16.911
1997	18.045
1998	17.953
1999	19.173
2000	19.619
2001	18.995
2002	17.602
2003	15.744
2004	15.438
2005	14.560
2006	14.795
2007	13.673
2008	12.472
2009	15.080
2010	14.637
2011	15.545
2012	18.414
2013	17.343
2014	17.634
2015	20.115
2016	19.138
2017	19.064
2018	20.179
2019	22.546
2020	25.512
2021	24.308
2022	23.412
2023	23.684
2024	22.729
2025	22.021
2026	21.372
2027	21.216
2028	21.120
2029	20.998