According to the latest data available from the Australian Bureau of Statistics, an Australian:
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Born in 2015-17, could on average expect to live until age 80.4 (male) or age 84.6 (female). Whereas, if they were born in 1960-62, then it would be 67.9 (male) or 74.2 (female).
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Aged 65 in 2015-17, could on average expect to live until age 84.7 (male) or age 87.3 (female). Whereas, if they were aged 65 in 1960-62, then it would be 77.5 (male) or 80.7 (female).
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Aged 85 in 2015-17, could on average expect to live until age 91.3 (male) or age 92.3 (female). Whereas, if they were aged 85 in 1960-62, then it would be 89.1 (male) or 89.8 (female).
Our increased awareness/understanding of longevity factors (e.g. genetics, gender, healthcare and lifestyle) has helped with improvements in our life expectancy.
In this TED Talk, Susan Pinkers discusses another important longevity factor, social interaction.