And yet again you are ignoring collective charity through taxation.
Why do you keep doing this?
If your thesis is correct there should be overall improvement in Health, social care and educational resources.
You can go even further - back to 1900 (a period of way higher religiosity, so therefore the health and education systems should have been awash with resources.
Yet.
In 1900 we spent just 1.3% of our GDP on education - in 2016 (even after Tory austerity) we were spending 4.5% of GDP on education.
Health is even more stark in improved resourcing - in 1900 we spent just 0.3% of our GDP - in 2016 (even after Tory austerity) we were spending 7.3% of GDP.
And that period is associated with slow and then rapid decline in religiosity and an increasing secular society.
Maybe you've got your graphs the wrong way up, if you are seeing this 'massive reduction'.