No doubt the article is interrogating a specific point of view.
To be fair the percentages he quotes are relative to GDP. If more people were earning more than before and therefore paying more tax wouldn't the percentage of tax taken relative to GDP get smaller. This passage in the article I feel demonstrates the point well:
"This means that around a quarter of all output will flow to the Federal Government in tax we all have to pay. The previous record high tax to GDP ratio was under the Howard Government when it reached 24.3 per cent in 2004/05 and 2005/06."
The graph shows the Liberal's (regardless of economic conditions) have consistently taken a higher percentage of Australian's economic output in tax than Labor.
I don't think this is necessarily good or bad (depends on what you spend the tax on) but I don't understand how the Liberal party can say with any credibility that Labor tax Australians to death, when in reality the Liberals tax Australian's more.
