Year	Percent of GDP (Units)
1988	21.433
1989	19.614
1990	22.008
1991	22.633
1992	23.092
1993	20.626
1994	22.352
1995	20.569
1996	11.712
1997	14.460
1998	18.050
1999	18.196
2000	17.164
2001	14.142
2002	16.663
2003	12.294
2004	13.076
2005	16.179
2006	13.370
2007	12.872
2008	16.027
2009	15.999
2010	17.259
2011	14.158
2012	14.742
2013	13.399
2014	18.016
2015	13.964
2016	12.119
2017	13.856
2018	17.606
2019	16.912
2020	25.111
2021	19.690
2022	17.643
2023	17.886
2024	17.007
2025	17.948
2026	18.069
2027	18.286
2028	18.304
2029	18.520