On the first row of result images in the "divorce rate" search you posted there are 5 graphs. 2 of them measure "divorces per 1000 people", and 3 measure "divorces per 1000 marriages".
In the divorce per 1000 marriages case, it would appear to be independent of the marriage rate.
a) Divorce rates are actually decreasing
b) They aren't independent of the marriage rate though (as the marriage rate is decreasing for the people most likely to get divorced)
> Divorce rates would tend to decrease if marriage rates decrease.
I agree. That is happening. So the premise that divorce rates are ever increasing is incorrect as applied to the whole population and it is wrong as applied to the married population.
https://www.google.com/search?q=marriage+rates+over+time&sou...