Year	Index
1980	20.3
1981	24.26
1982	28.253
1983	32.407
1984	35.887
1985	39.106
1986	41.382
1987	43.335
1988	45.541
1989	48.385
1990	51.479
1991	54.682
1992	57.417
1993	59.999
1994	62.497
1995	65.868
1996	68.492
1997	69.758
1998	71.175
1999	72.35
2000	74.217
2001	75.942
2002	77.925
2003	80.117
2004	81.925
2005	83.733
2006	85.6
2007	87.333
2008	90.383
2009	91.075
2010	92.55
2011	95.267
2012	98.425
2013	99.65
2014	99.883
2015	99.992
2016	99.942
2017	101.267
2018	102.525
2019	103.302
2020	104.533
2021	105.834
2022	107.36
2023	109.014
2024	110.78