9. Accounts receivable, net

2008
$m
2007
$m
2006
$m
Accounts receivable by geographic location
– US 900.6 828.8 470.3
– Other 9.8 15.5 22.3
910.4 844.3 492.6
Less: valuation allowances (62.2) (52.2) (46.9)
Total accounts receivable – net 848.2 792.1 445.7
Valuation allowances:
Balance at beginning of period
$m
Bad debt expense
$m
Utilized(1)
$m
Balance at end of period
$m
2005/06 40.8 81.2 (75.1) 46.9
2006/07 46.9 73.1 (67.8) 52.2
2007/08 52.2 93.6 (83.6) 62.2

(1) Including the impact of foreign exchange translation between opening and closing balance sheet dates.