I add about 1/2 cup of baking soda to every load of laundry. We have pretty hard water. The baking soda softens it so that it is more effective at washing away the detergent. Been doing this for a couple of years and I have noticed that our towels don't lose absorbency like towels we've had in the past.
The average number of children each woman will have over the course of her lifetime is called the Fertility Rate In 2011, the overall global life expectancy for both men and women was
The average age of women having their first child was a record high of 26 years old in 2013, according to the Centers for Disease Control and Prevention's National Vital Statistics Report. That's an increase of 3.3 years since 1980, when the average age was 22.7. Most of the change took place between 1980 and 2000, when the average rose to 24.9. It stayed relatively stable around 25 until 2008, when it started climbing again to its current high: Business Insider / data from CDC.