The latest personal insolvency statistics show that activity was down 8.7 per cent in the September quarter, compared with the September quarter last year.The Australian Financial Security Authority (formerly Insolvency and Trustee Service Australia) said September quarter activity was down 1.1 per cent on June quarter numbers.This follows the release of figures for the year to June, which showed a 2.17 per cent fall in personal insolvencies in 2012/13.Of the 7482 personal insolvencies during the September quarter, 4968 were bankruptcies, 2459 were Part IX debt agreements and 55 were Part X debt agreements.The most common cause of personal insolvency was unemployment. The number of personal insolvencies was down in all states and territories, except Western Australia, where there was an increase of 4.6 per cent in the September quarter.