Year	Percent of GDP (Units)
1988	44.215
1989	43.257
1990	44.000
1991	44.649
1992	46.866
1993	49.468
1994	49.005
1995	49.681
1996	51.272
1997	49.904
1998	51.385
1999	47.687
2000	48.591
2001	50.699
2002	50.566
2003	48.544
2004	48.865
2005	48.613
2006	47.815
2007	47.859
2008	48.350
2009	48.785
2010	48.382
2011	48.315
2012	49.024
2013	49.698
2014	49.596
2015	49.981
2016	48.537
2017	48.483
2018	48.928
2019	49.242
2020	48.815
2021	50.385
2022	49.639
2023	49.128
2024	49.469
2025	49.270
2026	49.242
2027	49.188
2028	49.218
2029	49.248