Year	Index
1980	20.301
1981	23.233
1982	26.365
1983	29.606
1984	32.623
1985	35.52
1986	39.161
1987	41.351
1988	43.569
1989	46.535
1990	49.958
1991	53.484
1992	57.105
1993	60.311
1994	62.481
1995	64.608
1996	66.84
1997	68.436
1998	70.132
1999	71.975
2000	74.458
2001	77.498
2002	80.687
2003	83.848
2004	87.138
2005	90.754
2006	94.364
2007	97.507
2008	99.59
2009	99.841
2010	100
2011	100.028
2012	100.097
2013	100.452
2014	100.257
2015	100.767
2016	101.067
2017	102.313
2018	103.259
2019	104.695
2020	106.502
2021	108.451
2022	110.549
2023	112.659
2024	114.897