Year	Index
1980	26.35
1981	28.85
1982	32.125
1983	35.35
1984	36.75
1985	39.225
1986	42.775
1987	46.425
1988	49.8
1989	53.575
1990	57.45
1991	59.35
1992	59.925
1993	60.975
1994	62.175
1995	65.025
1996	66.75
1997	66.9
1998	67.475
1999	68.425
2000	71.475
2001	74.625
2002	76.9
2003	79
2004	80.85
2005	83
2006	85.95
2007	87.975
2008	91.8
2009	93.425
2010	96.1
2011	99.325
2012	101
2013	103.475
2014	106.075
2015	107.675
2016	109.025
2017	111.175
2018	113.375
2019	115.662
2020	118.287
2021	121.271
2022	124.324
2023	127.429
2024	130.604