Year	Percent of GDP (Units)
1990	18.873
1991	14.005
1992	13.745
1993	13.817
1994	17.422
1995	16.402
1996	17.287
1997	16.256
1998	16.027
1999	16.712
2000	16.870
2001	17.280
2002	18.551
2003	17.567
2004	17.006
2005	15.889
2006	15.150
2007	14.595
2008	15.180
2009	16.659
2010	18.042
2011	17.180
2012	17.343
2013	18.519
2014	18.400
2015	18.759
2016	18.756
2017	19.157
2018	18.895
2019	21.686
2020	22.292
2021	20.773
2022	19.188
2023	18.437
2024	18.270
2025	17.981
2026	17.823
2027	17.571
2028	17.380
2029	17.208