A good year to deliver baby?

A lot of chinese believes, baby born in the year of pig (especially this yr, the golden pig) brings prosperity and luck to the baby. Well, it's true, look around you, those ppl that born in the year of pig normally have a better life. hehe... better life means, maybe don't need to work very hard but got money to spend, or even rich and etc. Easy life in other words. There's 4 among my relatives, and yes, they all really don't need to work hard but got lot's of money to spend..

But i'm quite surprised to see there's even more ppl going to deliver baby in the year of mouse, which is next year. Well, some accidentally one lar. hehe, but some, they really purposely wait for the year of mouse!! Yesterday when i was out shopping, i saw a lot of pregnant woman, ya, really A LOT. more than 10 within 2 hours!! Besides that, my brother's wife, gonna deliver baby next yr jan, then another friend of mine will be in feb, then another friend, will be in march, and ANOTHER one will be in april!!! wow wow wow!!!!

I understand if ppl want baby in the year of pig, but the year of mouse?? why? Can anybody explained to me??