I don't believe your figures at all tbh and I'm not sure what a 20 year old article is meant to illustrate?
Educating young people, particularly those from deprived areas and often broken homes themselves, of the importance of safe and responsible sex is clearly something that'd be a very good use of public money.
That's what community and youth support programmes can do. Unfortunately successive governments underfund these. Probably the government you vote for.
Surely there is nothing wrong with making up numbers to back up an argument, parky?