Year	Index
1980	42.534
1981	47.472
1982	50.233
1983	49.769
1984	49.549
1985	49.432
1986	50.436
1987	50.645
1988	51.124
1989	51.567
1990	53.101
1991	54.456
1992	55.461
1993	57.697
1994	60.078
1995	62.466
1996	63.693
1997	66.192
1998	68.632
1999	70.206
2000	72.338
2001	74.157
2002	76.095
2003	77.564
2004	79.678
2005	81.688
2006	83.792
2007	84.376
2008	88.328
2009	89.953
2010	91.789
2011	94.096
2012	97.133
2013	98.083
2014	98.84
2015	100.003
2016	100.903
2017	102.175
2018	103.954
2019	105.853
2020	107.906
2021	110.019
2022	112.187
2023	114.408
2024	116.681