Year	Index
1980	23.999
1981	26.687
1982	28.558
1983	30.502
1984	32.11
1985	33.526
1986	34.126
1987	36.059
1988	40.299
1989	42.793
1990	46.298
1991	49.307
1992	51.714
1993	54.407
1994	54.842
1995	56.039
1996	57.726
1997	59.684
1998	63.112
1999	64.363
2000	65.071
2001	67.845
2002	68.335
2003	71.219
2004	73.232
2005	74.918
2006	76.81
2007	80.506
2008	86.726
2009	89.896
2010	93.212
2011	100
2012	103.416
2013	106.424
2014	106.986
2015	108.458
2016	112.65
2017	116.425
2018	121.175
2019	125.416
2020	129.179
2021	133.054
2022	137.046
2023	141.157
2024	145.392