pull down to refresh
Right, that's my point, it's gradual over decades. OPs data shows sex increasing from about 2008 to 2014, then falling off a cliff after 2014, implying this is not the main cause.
Right, that's my point, it's gradual over decades. OPs data shows sex increasing from about 2008 to 2014, then falling off a cliff after 2014, implying this is not the main cause.