Does the country publish the statistical overview of voter lists online?

The Election Management Body, The Australian Electoral Commission

Some statistical highlights are available online from the first election in 1901, all the way through to the 2016 federal election. National statitical overviews can be found here on the Parliament of Australia website:

The AEC does not publish the electoral roll electronically, however there are overall enrolment statistics including the breakdown number of electors in each Division etc., please see links below:

http://www.aec.gov.au/Elections/Federal_Elections/2016/key-facts.htm

http://www.aec.gov.au/Elections/Federal_Elections/2016/enrolment-statistics.htm

The electoral roll is only available for viewing upon request, as specified under Part VI of the Commonwealth Electoral Act, ‘Electoral Rolls’.