I did not find any figures which gave either the number of children that adults had, or the number of children expected to stay within ELCA as they grew up.
I would be interested in seeing what the hope for the future really is. Without believing Christians, a building is just a building. Without people, a congregation or parish or church is merely a legal entity.
Within the past 11 years, I’ve been to six Lutheran (five ELCA and one LCMS) churches in which the majority of the members are at least 60. Why did this happen? I hope that all of them will find younger members, to ensure that they’ll have congregations, 15 years from now.