Final answer:
The direct answer to the percentage of divorces involving women over the age of 60 is not provided in the reference material. Therefore, a specific answer cannot be determined without further information.
Step-by-step explanation:
The percentage of divorces in the U.S. involving women over the age of 60 is not explicitly provided in the provided reference material. Hence, a confident answer cannot be given based on the current information.
Looking at the trends mentioned, divorce rates have seen several shifts over the years. The 60s marked a lower divorce rate that more than doubled by 1975, with a peak in 1980, reflecting societal changes such as the liberalization of divorce laws and women entering the workforce. However, more recently, divorce rates are said to be lower, akin to those of the 1970s, influenced by factors such as marrying at an older age and higher levels of education among married individuals.
These historical trends underscore how various factors such as age, education, and societal attitudes toward marriage and divorce can influence divorce statistics. Without exact data on women over 60 and divorce rates, one can only speculate based on broader demographic trends.