Year	Index (Units)
1980	35.625
1981	36.003
1982	36.913
1983	38.620
1984	40.983
1985	40.264
1986	36.786
1987	38.820
1988	40.226
1989	42.016
1990	43.621
1991	45.865
1992	46.972
1993	48.845
1994	50.768
1995	52.612
1996	54.549
1997	56.446
1998	61.243
1999	61.274
2000	66.816
2001	65.759
2002	67.816
2003	70.054
2004	74.264
2005	78.015
2006	81.121
2007	85.081
2008	93.919
2009	88.292
2010	91.614
2011	96.573
2012	97.538
2013	97.709
2014	100.120
2015	100.000
2016	101.658
2017	105.500
2018	106.159
2019	106.235
2020	105.366
2021	111.380
2022	118.559
2023	120.983
2024	126.245
2025	130.016
2026	132.416
2027	134.484
2028	136.708
2029	139.081