Year	Index
1980	33.222
1981	36.255
1982	39.752
1983	43.411
1984	46.952
1985	49.594
1986	51.242
1987	53.868
1988	57.091
1989	60.869
1990	64.04
1991	68.189
1992	68.547
1993	72.06
1994	73.961
1995	75.672
1996	76.03
1997	78.039
1998	78.09
1999	78.85
2000	80.037
2001	82.469
2002	83.782
2003	85.383
2004	86.345
2005	87.303
2006	88.526
2007	90.558
2008	92.972
2009	95.133
2010	96.829
2011	97.638
2012	98.591
2013	98.844
2014	99.152
2015	100
2016	101.425
2017	103.226
2018	105.513
2019	107.37
2020	109.206
2021	111.281
2022	113.507
2023	115.777
2024	118.093