Year	Index (Units)
1980	21.724
1981	23.293
1982	26.125
1983	27.778
1984	29.447
1985	29.812
1986	29.439
1987	30.868
1988	32.151
1989	34.461
1990	39.799
1991	40.425
1992	37.629
1993	40.132
1994	46.378
1995	48.311
1996	49.205
1997	47.461
1998	46.580
1999	48.585
2000	54.436
2001	56.108
2002	53.592
2003	59.411
2004	65.091
2005	73.786
2006	74.485
2007	84.472
2008	104.467
2009	76.422
2010	85.908
2011	99.083
2012	100.000
2013	101.654
2014	100.723
2015	91.926
2016	91.244
2017	98.739
2018	101.392
2019	97.526
2020	93.828
2021	111.743
2022	135.002
2023	123.732
2024	121.835
2025	123.874
2026	125.083
2027	125.551
2028	126.011
2029	126.480