Year	Index (Units)
1980	34.526
1981	39.588
1982	45.252
1983	50.858
1984	50.791
1985	66.743
1986	63.271
1987	59.370
1988	61.256
1989	62.546
1990	62.028
1991	61.164
1992	61.358
1993	60.193
1994	69.147
1995	79.255
1996	77.912
1997	81.994
1998	85.002
1999	87.013
2000	87.043
2001	90.782
2002	92.392
2003	95.305
2004	95.577
2005	100.000
2006	102.986
2007	103.568
2008	109.256
2009	113.483
2010	118.262
2011	123.003
2012	130.606
2013	133.855
2014	149.776
2015	153.831
2016	158.416
2017	168.624
2018	170.831
2019	174.979
2020	178.239
2021	184.163
2022	195.863
2023	202.615
2024	214.693
2025	224.276
2026	232.825
2027	240.173
2028	247.178
2029	254.448