Other things: Every year the massive baby boomer generation gets a little old and a little more infirm. De-stigmatization of mental illness means more people

Other things: Every year the massive baby boomer generation gets a little old and a little more infirm. De-stigmatization of mental illness means more people seek treatment. The population simply increases (obviously not 60% but the graphs are absolute numbers not per unit population). We get better at diagnosing certain things.