This is the histogram for year of birth from the church rolls database as at Feb 2013. Note that only about half of individuals in the database have year of birth recorded.

This is the histogram for the number of planned givers and the value of their giving, split by age of the givers, as at December 2013. It only includes those with a fixed amount of planned giving, and so under reports total income. "NoDoB" (<1%) indicates that no date of birth is recorded in the church rolls database for that giving unit, and we were unable to make a realistic estimate. About 25% of the birth dates are estimates.

Application of standard Australian actuarial data, assuming that the un-recorded dates of birth are distributed similarly to the recorded ones, leads to a most probably prediction of 15% of income to be lost by death in the next five years and 30% in ten years.

This is the cumulative histograms for year of birth of the congregation, the Church Council and the Elders as at Feb 2013, for those whose birth year is recorded in the rolls database. (19 of 23 Councillors, 30 of 35 elders)

A cumulative histogram shows the % of the group who were born before the birth year on the bottom axis. In particular, the point where the lines cross 50% gives the median birth year of the group. In this case, 50% of the congregation, including children, were born before 1944, 50% of Council were born before 1946, and 50% of Elders were born before 1944. Both the youngest and oldest are under-represented on Council and Elders, but the median ages are very close, with Council being slightly "younger" than the congregation.

If those born since 1995, under 18s, are removed, the median year of birth for the congregation drops to 1941.

The median age Glen Waverley in the 2011 census was 41, giving a median birth year of 1970 then.

Corresponding graph for the New Church Council Sep 2013, with a few guesses.

This is the histogram of postcodes for families in the church rolls database. Note the dominance of 3150.