Year	Percent of GDP (Units)
1980	54.011
1981	57.594
1982	57.711
1983	58.745
1984	58.103
1985	58.613
1986	60.049
1987	61.503
1988	60.134
1989	60.103
1990	61.044
1991	61.349
1992	57.796
1993	56.920
1994	56.375
1995	55.026
1996	56.934
1997	56.315
1998	56.424
1999	55.832
2000	55.339
2001	53.076
2002	51.261
2003	51.604
2004	51.690
2005	53.119
2006	52.207
2007	51.668
2008	50.924
2009	50.498
2010	49.265
2011	48.362
2012	48.771
2013	49.133
2014	48.138
2015	48.391
2016	49.754
2017	49.647
2018	49.562
2019	48.669
2020	48.253
2021	48.147
2022	48.066
2023	47.141
2024	47.384
2025	47.920
2026	48.903
2027	48.926
2028	48.941
2029	48.931