Year	Index
1980	42.084
1981	43.291
1982	45.101
1983	45.879
1984	48.727
1985	52.986
1986	55.199
1987	58.004
1988	61.956
1989	67.536
1990	67.399
1991	71.868
1992	74.722
1993	76.127
1994	78.445
1995	80.788
1996	82.989
1997	84.55
1998	85.977
1999	86.874
2000	89.213
2001	91.126
2002	91.465
2003	91.394
2004	93.251
2005	95.55
2006	100
2007	102.319
2008	110.349
2009	110.338
2010	110.868
2011	111.117
2012	115.48
2013	118.855
2014	119.774
2015	123.08
2016	126.338
2017	127.646
2018	129.286
2019	131.928
2020	134.699
2021	137.528
2022	140.416
2023	143.364
2024	146.375