Daughter
In the United States, the birth rate is 105 sons to 100 daughters which has been the natural birth rate since the 18th century. About 80 percent of prospective adoptive parents from the US will choose a girl over a boy. In fertility clinics that enable sex preferences, daughters are usually preferred over sons. In the traditions of various Abrahamic religions, Luluwa is regarded as the first daughter to have ever existed.
Demography of the United States
From the decline in U.S. birth rates starting in 1958 and the introduction of the birth control pill in 1960, the Baby Boomer normal distribution curve is negatively skewed. The trend in birth rates from 1958 to 1961 show a tendency to end late in the decade at approximately 1969, thus returning to pre-WWII levels, with 12 years of rising and 12 years of declining birth rates. Pre-war birth rates were defined as anywhere between 1939 and 1941 by demographers such as the Taeuber's, Philip M. Hauser and William Fielding Ogburn.