Economics correction
Sheet1
| year | S | U |
| 1995 | 4457.3903 | 19361.61 |
| 1996 | 4590.6151 | 19675.385 |
| 1997 | 4721.9218 | 19936.078 |
| 1998 | 4929.7309 | 20296.269 |
| 1999 | 5076.1222 | 20773.878 |
| 2000 | 5356.8927 | 21057.107 |
| 2001 | 5514.4352 | 21042.565 |
| 2002 | 5592.1277 | 21306.872 |
| 2003 | 5846.8952 | 21459.105 |
| 2004 | 6071.5377 | 21956.462 |
| 2005 | 6371.4338 | 21859.566 |
| 2006 | 6639.4091 | 22023.591 |
| 2007 | 6919.87 | 22361.13 |
| 2008 | 7123.5297 | 22733.47 |
| 2009 | 6952.9967 | 21542.003 |