Year	Percent of GDP (Units)
1990	30.525
1991	27.393
1992	28.209
1993	24.614
1994	23.270
1995	22.598
1996	22.391
1997	21.155
1998	23.114
1999	24.643
2000	25.632
2001	28.223
2002	27.144
2003	28.069
2004	25.884
2005	24.538
2006	25.574
2007	25.889
2008	26.920
2009	30.889
2010	26.604
2011	27.088
2012	28.505
2013	27.780
2014	25.957
2015	24.708
2016	22.858
2017	22.043
2018	22.800
2019	23.575
2020	25.040
2021	24.448
2022	24.682
2023	23.250
2024	21.116
2025	20.489
2026	20.187
2027	20.143
2028	20.080
2029	19.868