Year	Index
1980	42.645
1981	46.308
1982	42.768
1983	44.227
1984	52.224
1985	52.464
1986	54.819
1987	58.25
1988	58.524
1989	60.841
1990	65.911
1991	69.513
1992	70.739
1993	71.452
1994	73.298
1995	76.997
1996	77.365
1997	79.606
1998	81.512
1999	83.437
2000	84.367
2001	83.577
2002	83.932
2003	88.323
2004	88.956
2005	95.09
2006	99.999
2007	110.482
2008	105.844
2009	106.741
2010	116.44
2011	115.414
2012	115.265
2013	121.149
2014	126.156
2015	133.851
2016	132.553
2017	137.09
2018	140.55
2019	143.066
2020	146.219
2021	149.191
2022	152.181
2023	155.236
2024	158.367