Daas:
An 18 year old girl would marry a boy is 18, 19, 20, 21, 22, 23, 24 or even older.
A boy would marry any one his age and younger. For example, a 22 year old boy would marry an 18, 19, 20, 21, and maybe a 22 year old girl. Hence, girls have more options of marrying eligible boys than boys marrying eligible girls since girls marry their age and up while boys will marry their age and younger.
In addition, the census is just proof against this misconception that there are more girls than boys in the world; which is totally false based on a census.
Fortunately, a fact does not need additional validity from YWN forum since it is a fact in the nature of biology that increases the chances of having a boy.
Furthermore, there is no statistics or documentation that can help you determine the sizes of Bais Yaakov or yeshivas since that data was never compiled. You can not look at Mir yeshiva in NY or a Lakewood yeshiva enrollment without also compiling the data from Bais Yaakov’s in Cincinnati.
I stand by my statements that 1) There are enough of the male and female genders for everyone. 2) People need to expand their dating circles beyond their 4 amos.