Year	Index
1980	9.175
1981	10.489
1982	11.71
1983	13.487
1984	15.285
1985	16.45
1986	17.716
1987	19.621
1988	21.143
1989	23.56
1990	26.167
1991	27.161
1992	28.923
1993	32.044
1994	34.868
1995	36.707
1996	37.913
1997	39.301
1998	41.503
1999	42.92
2000	44.433
2001	46.922
2002	48.865
2003	50.713
2004	52.618
2005	56.237
2006	60.91
2007	65.706
2008	73.614
2009	78.775
2010	87.066
2011	91.508
2012	100
2013	105.189
2014	111.182
2015	116.362
2016	119.933
2017	122.192
2018	123.49
2019	124.894
2020	127.587
2021	130.76
2022	134.208
2023	138.075
2024	142.217