Year	Index (Units)
1980	24.788
1981	28.060
1982	31.244
1983	34.028
1984	36.643
1985	42.338
1986	48.140
1987	56.038
1988	61.905
1989	65.345
1990	68.140
1991	67.707
1992	69.076
1993	70.377
1994	71.707
1995	72.719
1996	74.054
1997	74.712
1998	75.844
1999	76.259
2000	77.858
2001	81.050
2002	81.935
2003	83.065
2004	85.654
2005	87.214
2006	89.127
2007	93.379
2008	96.896
2009	99.245
2010	102.480
2011	105.419
2012	105.230
2013	108.621
2014	110.573
2015	111.518
2016	113.648
2017	118.100
2018	120.492
2019	123.543
2020	126.739
2021	130.932
2022	138.071
2023	145.921
2024	150.269
2025	154.216
2026	157.941
2027	161.098
2028	164.156
2029	167.660