Year	Index (Units)
1980	20.007
1981	19.869
1982	21.128
1983	24.964
1984	24.959
1985	27.460
1986	29.264
1987	31.360
1988	29.825
1989	31.260
1990	32.829
1991	39.366
1992	50.216
1993	52.048
1994	53.959
1995	52.985
1996	59.630
1997	61.188
1998	64.641
1999	67.619
2000	68.295
2001	68.516
2002	74.005
2003	80.992
2004	77.828
2005	80.967
2006	76.566
2007	82.166
2008	89.974
2009	91.772
2010	90.985
2011	92.803
2012	92.300
2013	89.550
2014	94.032
2015	96.984
2016	98.648
2017	99.553
2018	103.398
2019	100.000
2020	104.458
2021	114.352
2022	111.565
2023	115.323
2024	121.842
2025	124.792
2026	127.223
2027	129.608
2028	131.921
2029	134.381