Year	Percent of GDP (Units)
1991	30.404
1992	29.509
1993	22.531
1994	22.862
1995	25.375
1996	22.680
1997	21.706
1998	21.240
1999	23.313
2000	19.170
2001	19.008
2002	18.702
2003	17.494
2004	19.314
2005	20.151
2006	20.591
2007	22.726
2008	27.760
2009	26.716
2010	25.705
2011	22.936
2012	22.755
2013	22.662
2014	24.790
2015	35.093
2016	35.524
2017	35.935
2018	39.508
2019	42.631
2020	41.429
2021	46.770
2022	36.687
2023	40.981
2024	34.758
2025	32.311
2026	32.153
2027	31.360
2028	31.043
2029	31.280