Year	Index (Units)
1980	24.381
1981	26.498
1982	28.456
1983	30.129
1984	31.419
1985	31.969
1986	34.155
1987	36.539
1988	39.072
1989	39.458
1990	39.198
1991	39.815
1992	41.495
1993	42.378
1994	53.378
1995	60.904
1996	62.549
1997	66.490
1998	69.484
1999	70.001
2000	71.775
2001	74.900
2002	77.207
2003	79.753
2004	80.917
2005	84.059
2006	86.132
2007	87.765
2008	89.261
2009	89.724
2010	91.295
2011	95.764
2012	97.008
2013	99.515
2014	100.002
2015	101.153
2016	101.810
2017	102.375
2018	103.014
2019	103.844
2020	106.352
2021	110.776
2022	116.544
2023	121.659
2024	126.282
2025	130.071
2026	132.932
2027	135.524
2028	138.235
2029	140.999