Year	Index (Units)
1980	64.048
1981	65.848
1982	66.471
1983	66.610
1984	65.571
1985	63.557
1986	61.541
1987	60.563
1988	61.113
1989	61.724
1990	63.007
1991	65.880
1992	65.635
1993	66.185
1994	66.613
1995	69.974
1996	70.585
1997	70.280
1998	70.157
1999	69.310
2000	68.110
2001	67.710
2002	68.110
2003	68.310
2004	68.610
2005	69.410
2006	71.120
2007	76.320
2008	80.420
2009	83.220
2010	86.320
2011	88.520
2012	91.720
2013	94.030
2014	95.820
2015	97.000
2016	97.940
2017	96.850
2018	98.700
2019	98.520
2020	103.770
2021	105.060
2022	107.200
2023	107.610
2024	110.039
2025	112.276
2026	114.527
2027	116.817
2028	119.153
2029	121.531