<human>:  What is the average life expectancy for different countries?
<bot>: The average life expectancy for different countries varies, but it is generally higher in countries with higher levels of economic development and better access to healthcare and other social services. For example, in 2019, the average life expectancy at birth in Japan was 84.4 years, in the United States it was 78.9 years, and in India it was 69.4 years.