In the 1970s, the average age of an Australian was in the late 20’s, while today it’s in the late 30’s, such has been the ageing of our population in that time.
Our life stages have also changed in the past 40 years. People were getting married in their early twenties back in the seventies, while now the median age of marriage is approaching the thirties, indicating great social change as well.

EARNING MORE, COSTING MORE
Australians are also earning a lot more now than we were back then; the average full time earnings in 1975 was $7,600 per year, today the annual average earnings exceed $72,000 per annum.
And while we are earning more, costs are a lot more today than they were back then. The cost of a loaf of bread today is more than 10 times the price it was in 1975, while a litre of milk today is 3 times the cost it was 4 decades ago.

For those who think that young people can just do without a few things and save for a house.
Four decades ago Sydney had the highest house cost, averaging $28,000 while today it exceeds $850,000. So while earnings have gone up, by almost tenfold, house prices have gone up by more than thirtyfold in that same period of time.

http://mccrindle.com.au/the-mccrindle-b ... 5-to-todayTECHNOLOGICAL ADVANCEMENTS THAT CHANGED THE WORLD
1970: Computer Floppy Disks are introduced.
1971: VCRs introduced.
1975: Microsoft is founded by Bill Gates and Paul Allen, who develop a BSIC program for the Microcomputer Altair 8800, and is released the same year.
1975: The world’s first digital camera is created by Steven Sasson and Kodak Company.
1975: The laser printer is invented.
1977: The first personal computers (PC) are introduced.
1979: Sony introduces the Walkman.
1979: Cell phones are invented.