Year	Index
1980	22.101
1981	26.82
1982	28.748
1983	29.732
1984	30.408
1985	31.156
1986	32.013
1987	32.989
1988	35.346
1989	37.361
1990	40.564
1991	44.35
1992	47.106
1993	49.367
1994	52.46
1995	54.811
1996	57.51
1997	60.063
1998	64.576
1999	65.101
2000	66.572
2001	69.279
2002	71.193
2003	73.695
2004	76.341
2005	78.444
2006	80.202
2007	82.235
2008	86.079
2009	88.452
2010	91.051
2011	94.717
2012	96.789
2013	98.048
2014	99.298
2015	99.999
2016	100.971
2017	102.934
2018	104.454
2019	105.865
2020	107.506
2021	109.334
2022	111.302
2023	113.416
2024	115.685