Table 1. ARIMA model fit statistics.

					Ljung-Box
Country, Model	R2	Normalized BIC*	RMSE†	MAPE‡	Statistics	P
United States ARIMA (0,1,1)(1,0,0)	0.99	1.88	2.43	3.65	18.17	0.31
United Kingdom ARIMA (0,1,1)(0,1,1)	0.98	2.51	3.38	7.21	23.48	0.10
Australia ARIMA (0,1,1)(0,1,1)	0.96	3.23	4.85	9.57	13.74	0.62
Brazil ARIMA (0,1,1)(1,0,1)	0.99	2.12	2.70	9.47	22.06	0.11

* Normalized Bayesian Information Criteria

^† Root mean square error

^‡ Mean absolute percentage error