Since 1998 the number of tax investigations concerning income tax and corporation tax carried out in Northern Ireland each year are respectively:
Number 1998-99 5,860 1999-2000 10,917 2000-01 11,162 2001-02 10,009 2002-03 7,673 2003-04 8,308 2004-05 6,804 2005-06 6,272
The amounts brought to charge in relation to income tax and corporation tax as a result of tax investigations carried out in Northern Ireland each year is respectively:
£ million 2000-01 22.09 2001-02 24.71 2002-03 29.76 2003-04 39.04 2004-05 43.40 2005-06 49.43
Data in respect of earlier years are not available.