Year	Index (Units)
1980	6.733
1981	7.500
1982	8.124
1983	8.552
1984	9.476
1985	9.804
1986	10.045
1987	10.563
1988	11.708
1989	12.716
1990	13.618
1991	15.387
1992	16.956
1993	18.367
1994	20.612
1995	23.449
1996	24.995
1997	28.148
1998	29.991
1999	31.590
2000	32.562
2001	34.524
2002	35.868
2003	37.225
2004	39.977
2005	41.916
2006	44.593
2007	48.888
2008	53.020
2009	61.002
2010	66.958
2011	77.551
2012	85.103
2013	91.835
2014	98.989
2015	103.791
2016	107.266
2017	111.401
2018	115.742
2019	125.439
2020	137.453
2021	152.631
2022	171.579
2023	216.813
2024	270.655
2025	305.964
2026	329.578
2027	350.638
2028	373.384
2029	397.677