The CPI can be erratic, which is why the Reserve Bank looks at the trimmed mean
Quarterly inflation growth
Apr
2015
Jul
Oct
Jan
2016
Apr
Jul
Oct
Jan
2017
Apr
Jul
Oct
Jan
2018
Apr
Jul
Oct
Jan
2019
Apr
Jul
Oct
Jan
2020
Apr
Jul
Oct
−2.0
−1.8
−1.6
−1.4
−1.2
−1.0
−0.8
−0.6
−0.4
−0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4%
CPI
Trimmed Mean
CPI
Trimmed Mean
