Ward level data for England on the number of dwellings in each council tax band at 2001 can be found at:
http://www.communities.gov.uk/index.asp?id=1505882
Data for years 2001 to 2004 using middle super output areas can be found on the Neighbourhood Statistics Service website at:
http://www.neighbourhood.statistics.gov.uk/dissemination/datasetList.do?JSAllowed=true&Function=&%24ph=60&CurrentPageId=60&step=1&CurrentTreeIndex=l&searchString=&datasetFamilyId-938&Next.x-14&Next.y=13
I hope this is helpful.
The real terms average percentage increases in band D, two-adult council tax in England in each year since 1997-98 are shown in the following table:
Real term increase 1997-98 4.0 1998-99 4.4 1999-2000 5.1 2000-01 3.1 2001-02 4.5 2002-03 6.7 2003-04 9.5 2004-05 3.3 2005-06 0.8 2006-07 1.9
The figures are calculated from data reported by local authorities on BR1, BR2 and BR3 forms and have been adjusted using the all items retail prices index (RPI) as at April each year.