Schedule Percentage increase of earnings factors for specified tax years
Original text. Later amendments are not shown.
| Tax year | Percentage increase |
|---|
| 1978-1979 | 846.7 |
| 1979-1980 | 735.6 |
| 1980-1981 | 598.1 |
| 1981-1982 | 484.6 |
| 1982-1983 | 431.0 |
| 1983-1984 | 393.1 |
| 1984-1985 | 356.5 |
| 1985-1986 | 328.3 |
| 1986-1987 | 293.3 |
| 1987-1988 | 266.2 |
| 1988-1989 | 236.9 |
| 1989-1990 | 204.0 |
| 1990-1991 | 183.3 |
| 1991-1992 | 157.3 |
| 1992-1993 | 141.6 |
| 1993-1994 | 130.1 |
| 1994-1995 | 123.2 |
| 1995-1996 | 113.8 |
| 1996-1997 | 108.0 |
| 1997-1998 | 98.1 |
| 1998-1999 | 89.4 |
| 1999-2000 | 81.7 |
| 2000-2001 | 71.0 |
| 2001-2002 | 64.4 |
| 2002-2003 | 57.6 |
| 2003-2004 | 52.1 |
| 2004-2005 | 46.6 |
| 2005-2006 | 40.8 |
| 2006-2007 | 36.2 |
| 2007-2008 | 30.8 |
| 2008-2009 | 25.5 |
| 2009-2010 | 21.8 |
| 2010-2011 | 20.3 |
| 2011-2012 | 17.6 |
| 2012-2013 | 15.5 |
| 2013-2014 | 13.5 |
| 2014-2015 | 12.5 |
| 2015-2016 | 10.8 |
| 2016-2017 | 8.6 |
| 2017-2018 | 5.9 |
| 2018-2019 | 2.8 |