Year	Index (Units)
1980	27.627
1981	33.074
1982	36.755
1983	40.193
1984	38.776
1985	38.072
1986	39.643
1987	39.664
1988	39.604
1989	39.228
1990	39.671
1991	39.765
1992	40.410
1993	40.374
1994	54.610
1995	63.236
1996	66.143
1997	69.653
1998	70.333
1999	70.295
2000	71.397
2001	75.019
2002	77.067
2003	76.349
2004	76.866
2005	80.937
2006	81.813
2007	82.167
2008	88.485
2009	92.084
2010	92.279
2011	95.562
2012	98.084
2013	99.813
2014	100.000
2015	101.790
2016	102.663
2017	102.441
2018	103.392
2019	104.102
2020	106.008
2021	110.830
2022	119.270
2023	125.304
2024	128.740
2025	131.369
2026	133.934
2027	136.613
2028	138.935
2029	141.297