Between 2010Q4-2013Q1 the Australian dollar's value reached parity, and also exceeded parity against the USD. Using the data provided identify the reason(s) for the appreciation of the AUD against the USD.Is this outcome consistent with PPP?

Date	Exchange Rate	Real GDP Growth Rate (%)	Rates of Inflation (%)	Interest Rate (%)
	AUD/USD	United States	Australia	United States	Australia	United States	Australia
3/29/2013	1.043	1.616%	2.193%	1.740%	2.503%	1.934%	3.468%
12/28/2012	1.038	1.566%	2.835%	1.904%	2.102%	1.693%	3.105%
9/28/2012	1.040	2.593%	3.472%	1.685%	1.906%	1.626%	3.057%
6/29/2012	1.025	2.374%	4.237%	1.888%	1.208%	1.806%	3.358%
3/30/2012	1.036	2.600%	4.677%	2.829%	1.524%	2.027%	3.980%
12/30/2011	1.025	1.523%	3.439%	3.345%	2.990%	2.036%	4.101%
9/30/2011	0.972	0.918%	3.312%	3.716%	3.423%	2.398%	4.553%
6/30/2011	1.071	1.738%	2.640%	3.346%	3.653%	3.189%	5.326%
3/30/2011	1.031	2.031%	1.976%	2.148%	3.361%	3.443%	5.516%
12/30/2010	1.012	2.788%	2.761%	1.230%	2.646%	2.848%	5.337%
9/30/2010	0.968	3.349%	2.474%	1.203%	2.882%	2.768%	5.041%