Year	Index (Units)
1980	1.115
1981	1.455
1982	1.919
1983	2.292
1984	2.515
1985	2.781
1986	3.184
1987	3.676
1988	4.644
1989	5.063
1990	5.664
1991	6.147
1992	7.043
1993	7.746
1994	10.767
1995	16.046
1996	19.217
1997	20.081
1998	21.328
1999	22.861
2000	25.506
2001	27.525
2002	32.066
2003	31.520
2004	35.919
2005	42.515
2006	47.092
2007	51.937
2008	56.765
2009	61.848
2010	67.567
2011	73.974
2012	78.201
2013	82.757
2014	87.789
2015	94.290
2016	100.000
2017	108.590
2018	117.927
2019	124.558
2020	129.775
2021	137.327
2022	148.528
2023	163.175
2024	175.884
2025	188.796
2026	201.813
2027	214.824
2028	227.713
2029	241.262