Since 1915 the British pound has devalued in 95 years to about a halfpenny. Factor of 480 : 1
Since 1967 the US dollar has devalued in 44 years to about 8 cents. Factor of 12 : 1
Since 1967 the NZ dollar has devalued in 44 years to about 2 cents. Factor of 50 : 1
If you can remember what your salary was in 1967, multiply it by the above factor and see what your income should be today. Consider your tax rate in 1967 and compare to what you pay today.
Maybe someone can show what the Aust dollar would equate to, based on its devaluation since 1967
