Year	Index
1980	37.573
1981	42.792
1982	46.939
1983	51.301
1984	54.733
1985	57.307
1986	58.522
1987	60.346
1988	62.205
1989	64.421
1990	66.49
1991	68.66
1992	70.04
1993	71.6
1994	72.62
1995	74.16
1996	75.42
1997	76.28
1998	76.46
1999	77.49
2000	78.89
2001	80.08
2002	81.82
2003	83.8
2004	85.68
2005	87.16
2006	88.62
2007	91.09
2008	92.15
2009	93.06
2010	94.91
2011	97.41
2012	98.88
2013	99.71
2014	99.81
2015	100.11
2016	100.94
2017	102.22
2018	104.233
2019	105.516
2020	107.226
2021	108.95
2022	110.919
2023	112.991
2024	115.13