Year	Index (Units)
1980	15.449
1981	17.970
1982	20.173
1983	21.889
1984	24.198
1985	27.024
1986	30.168
1987	33.297
1988	36.214
1989	39.131
1990	43.141
1991	45.981
1992	46.771
1993	48.403
1994	51.867
1995	57.676
1996	58.623
1997	61.901
1998	66.090
1999	71.235
2000	72.865
2001	74.440
2002	76.261
2003	79.603
2004	86.624
2005	92.989
2006	100.000
2007	109.197
2008	120.151
2009	122.846
2010	133.537
2011	146.950
2012	155.099
2013	167.583
2014	179.257
2015	190.466
2016	201.002
2017	212.948
2018	224.750
2019	237.152
2020	251.430
2021	265.616
2022	285.704
2023	313.546
2024	338.316
2025	358.615
2026	378.339
2027	399.148
2028	421.101
2029	444.261