Year	Index
1980	30.346
1981	32.914
1982	34.79
1983	35.728
1984	36.136
1985	36.543
1986	37.237
1987	38.909
1988	40.785
1989	42.131
1990	43.4
1991	45.3
1992	46.7
1993	46.3
1994	47
1995	48.4
1996	51.8
1997	53.2
1998	54.7
1999	55.9
2000	56.8
2001	57.7
2002	57.8
2003	59.1
2004	63.1
2005	68.7
2006	76.8
2007	87.3
2008	100.5
2009	95.6
2010	93.3
2011	95.2
2012	96.9
2013	100
2014	103.358
2015	105.233
2016	108.05
2017	108.477
2018	108.718
2019	108.861
2020	112.918
2021	115.536
2022	117.864
2023	120.211
2024	122.576