Year	Index (Units)
1980	7.172
1981	7.395
1982	8.758
1983	8.915
1984	9.443
1985	9.263
1986	9.482
1987	9.757
1988	9.981
1989	10.053
1990	10.661
1991	12.944
1992	14.820
1993	15.936
1994	22.686
1995	31.919
1996	34.710
1997	40.474
1998	38.063
1999	38.812
2000	41.111
2001	41.021
2002	43.550
2003	46.893
2004	51.700
2005	54.599
2006	61.226
2007	65.254
2008	79.821
2009	84.400
2010	84.600
2011	91.600
2012	95.200
2013	98.600
2014	100.700
2015	105.300
2016	113.000
2017	113.707
2018	115.000
2019	122.700
2020	127.300
2021	129.700
2022	157.800
2023	167.936
2024	177.004
2025	185.854
2026	195.147
2027	204.904
2028	215.150
2029	225.907