Year	Index
1980	5.019
1981	5.291
1982	5.568
1983	5.558
1984	6.061
1985	7.302
1986	6.439
1987	6.139
1988	6.56
1989	7.285
1990	7.65
1991	11.092
1992	11.32
1993	11.853
1994	12.599
1995	14.469
1996	13.167
1997	13.509
1998	13.82
1999	14.799
2000	14.188
2001	13.578
2002	15.48
2003	16.444
2004	17.736
2005	19.921
2006	23.61
2007	27.959
2008	38.932
2009	41.711
2010	47.786
2011	64.95
2012	74.693
2013	80.408
2014	86.128
2015	94.204
2016	100
2017	116.514
2018	128.622
2019	138.912
2020	150.025
2021	162.026
2022	174.988
2023	188.986
2024	204.103