This chart shows the net worth difference in just 3 years for US net worth. It does not show age brackets but overall net worth. Thought was interesting.
https://dqydj.com/wp-content/uploads/2017/09/net_worth_brackets_united_states_2016.png
https://dqydj.com/wp-content/uploads/2017/09/net_worth_brackets_united_states_2016.png