Yes, cumulative figures. They had an average audience of ~1 million per night.
Rosbif, a few points if I may:
(a) the overwhelming majority of British settlers in Australia were free men and women who emigrated voluntarily
(b) the overwhelming majority of Australians (~80%) are not descended from convicts
(c) those Australians who do have convict ancestry, are usually proud of the fact
While I'm on the subject, it's worth pointing out that Great Britain was (ironically!) the original convict nation. The government only began sending sent her vast criminal population to other countries when it became impossible to house them all. No other nation in history has ever had this problem. (Perhaps no other nation in history has been so prone to criminality?)
Britain's first country of choice was America, which received large numbers of convicts for ~40 years. The British only switched to Australia after being comprehensively thrashed by the Yanks in their war of independence.
I don't have convict ancestry myself, but you might be one of the many Brits who do.