Year	Percent of GDP (Units)
1981	19.920
1982	16.264
1983	14.373
1984	14.238
1985	15.523
1986	14.450
1987	14.808
1988	14.997
1989	14.988
1990	14.480
1991	15.937
1992	16.170
1993	17.304
1994	16.389
1995	15.791
1996	16.390
1997	20.453
1998	16.747
1999	17.839
2000	16.869
2001	13.407
2002	13.733
2003	16.389
2004	17.905
2005	17.171
2006	18.840
2007	21.268
2008	18.877
2009	18.818
2010	20.729
2011	22.395
2012	21.437
2013	21.043
2014	20.845
2015	18.630
2016	22.639
2017	22.853
2018	20.742
2019	20.368
2020	20.677
2021	23.717
2022	21.649
2023	18.180
2024	19.633
2025	20.680
2026	21.461
2027	21.739
2028	22.185
2029	22.185