Year	Percent of GDP (Units)
1980	46.745
1981	49.321
1982	48.830
1983	48.555
1984	50.186
1985	51.952
1986	53.383
1987	51.694
1988	54.418
1989	53.939
1990	53.720
1991	56.072
1992	55.934
1993	55.504
1994	55.737
1995	54.004
1996	55.062
1997	53.567
1998	52.855
1999	51.510
2000	53.636
2001	51.116
2002	51.415
2003	50.613
2004	50.343
2005	51.774
2006	52.186
2007	51.792
2008	52.052
2009	51.604
2010	51.371
2011	52.632
2012	53.279
2013	54.291
2014	54.286
2015	54.064
2016	53.949
2017	52.980
2018	52.527
2019	52.393
2020	51.617
2021	53.000
2022	52.730
2023	52.520
2024	51.733
2025	51.609
2026	51.544
2027	51.468
2028	51.382
2029	51.382