1 For December 2016, investigations by the ABS identified a high number of missing passenger cards. For further information see December 2016 in the Data Quality Issues (Appendix 2) in the left hand side navigation bar under the Explanatory Notes tab.
2 For further information about the data, including updates or changes, see the Explanatory Notes section of this issue and the related Appendices such as Data Quality Issues (Appendix 2).
3 Short-term movements are based on a sample and are subject to sampling error. See paragraphs 9 to 11 of the Explanatory Notes and the Standard Errors section under the Explanatory Notes tab.
4 Occasionally situations occur that necessitate breaks being applied to the trend series. For an overview of the breaks currently included in the trend series see paragraph 26 of the Explanatory Notes section of this issue.