Year	Index
1992	1.736
1993	28.095
1994	55.489
1995	56.578
1996	58.64
1997	60.815
1998	64.895
1999	67.5
2000	70.608
2001	73.275
2002	74.5
2003	75.817
2004	77.375
2005	79.942
2006	82.492
2007	84.883
2008	90.042
2009	92.183
2010	93.133
2011	95.25
2012	98.5
2013	100.683
2014	100.467
2015	100
2016	98.875
2017	99.992
2018	101.492
2019	102.989
2020	104.636
2021	106.415
2022	108.331
2023	110.389
2024	112.486