Year	Index
1980	13.93
1981	16.787
1982	19.859
1983	23.128
1984	25.871
1985	28.223
1986	28.98
1987	32.214
1988	33.242
1989	37.315
1990	40.48
1991	39.743
1992	43.334
1993	44.075
1994	49.402
1995	47.956
1996	50.555
1997	54.043
1998	56.961
1999	57.174
2000	57.079
2001	58.159
2002	62.48
2003	65.208
2004	70.325
2005	75.825
2006	78.275
2007	81.783
2008	86.908
2009	99.633
2010	99.433
2011	102.292
2012	108.625
2013	108.4
2014	107.058
2015	109.117
2016	109.259
2017	110.677
2018	114.741
2019	120.639
2020	125.766
2021	130.168
2022	133.813
2023	137.56
2024	141.411