Schedule Percentage increase of earnings factor for specified tax years
Original text. Later amendments are not shown.
| Tax year | Percentage increase |
|---|
| 1978-1979 | 771.5 |
| 1979-1980 | 669.2 |
| 1980-1981 | 542.6 |
| 1981-1982 | 438.2 |
| 1982-1983 | 388.8 |
| 1983-1984 | 353.9 |
| 1984-1985 | 320.2 |
| 1985-1986 | 294.2 |
| 1986-1987 | 262.0 |
| 1987-1988 | 237.1 |
| 1988-1989 | 210.1 |
| 1989-1990 | 179.9 |
| 1990-1991 | 160.8 |
| 1991-1992 | 136.9 |
| 1992-1993 | 122.4 |
| 1993-1994 | 111.8 |
| 1994-1995 | 105.5 |
| 1995-1996 | 96.8 |
| 1996-1997 | 91.4 |
| 1997-1998 | 82.3 |
| 1998-1999 | 74.3 |
| 1999-2000 | 67.3 |
| 2000-2001 | 57.4 |
| 2001-2002 | 51.3 |
| 2002-2003 | 45.1 |
| 2003-2004 | 40.0 |
| 2004-2005 | 34.9 |
| 2005-2006 | 29.6 |
| 2006-2007 | 25.3 |
| 2007-2008 | 20.4 |
| 2008-2009 | 15.5 |
| 2009-2010 | 12.1 |
| 2010-2011 | 10.7 |
| 2011-2012 | 8.3 |
| 2012-2013 | 6.3 |
| 2013-2014 | 4.5 |
| 2014-2015 | 3.5 |
| 2015-2016 | 2.0 |