Year	Index (Units)
1980	34.371
1981	38.167
1982	40.496
1983	42.116
1984	43.786
1985	45.811
1986	48.291
1987	51.186
1988	53.259
1989	56.138
1990	58.736
1991	63.026
1992	66.541
1993	68.370
1994	69.305
1995	70.707
1996	71.599
1997	72.001
1998	72.870
1999	73.686
2000	74.962
2001	76.733
2002	77.883
2003	80.731
2004	81.668
2005	83.153
2006	84.781
2007	86.822
2008	90.671
2009	92.181
2010	93.676
2011	96.546
2012	98.392
2013	98.831
2014	100.000
2015	101.878
2016	101.542
2017	103.065
2018	105.402
2019	108.028
2020	108.070
2021	111.209
2022	117.443
2023	121.036
2024	123.508
2025	126.279
2026	128.815
2027	131.253
2028	133.746
2029	136.411