 However, a 2005 study reported that some of the risks related to longevity are poorly managed "practically everywhere" due to governments backing away from defined benefit promises and insurance companies being reluctant to sell genuine life annuities because of fears that life expectancy will go up.Longevity insurance is now becoming more common in the UK and the U.S. (see Future of annuities, below) while Chile, in comparison to the U.S., has had a very large life annuity market for 20 years.It is expected that the aging of the baby boomer generation in the US will increase the demand for this type of instrument and for it to be optimized for the annuitant.