Year	Index
1980	41.273
1981	45.276
1982	47.917
1983	49.692
1984	51.632
1985	52.968
1986	53.153
1987	53.545
1988	53.7
1989	55.073
1990	56.749
1991	59.205
1992	62.034
1993	64.234
1994	66.603
1995	68.913
1996	71.311
1997	73.204
1998	77.078
1999	79.184
2000	80.412
2001	81.56
2002	83.022
2003	83.913
2004	85.105
2005	87.692
2006	90.867
2007	92.708
2008	97.742
2009	98.325
2010	100.017
2011	103.192
2012	104.908
2013	107.117
2014	110.483
2015	112.808
2016	115.15
2017	119.525
2018	120.683
2019	123.099
2020	126.238
2021	129.404
2022	132.525
2023	135.596
2024	138.642