When the US went into depression the budget blew out dramatically. To reel it in the US lifted personal tax rates. Here are the moves of the top tier rate during that time:
1933: Raised from 25% to 69%
1937: Raised to 79%
1945: Raised to...wait for it...91%
It stayed above 88% till 1963! Yikes...I'm getting an island...
My research on Australia shows that most taxes in those days were state based and much of the literature quotes tax as a percentage of GDP rather than specific individual tax rates. We've already seen Rudd abolish one tax cut - I wonder when they may start lifting personal tax rates as the deficit increases?