It is commonly perceived that the divorce rate has skyrocketed since the 1950s, but actually divorce rates in the united states have been:

The divorce rate has been increasing steadily since 1900.
Between the year of 1900 - 1960, the divorce rate in united states was only around 9%.
But in 2017, the divorce rate is actually well over 40% (not counting the couples who choose to stay regardless of happiness or choose to have open relationship)