 Another Williams Institute study conducted in February 2012 estimated that in the first three years after the law takes effect, Maryland same-sex couples will generate between $40 and $64 million for the state economy, in addition to whatever revenue out-of-state couples bring.Several dozen small employers in the state have also said that same-sex marriage will be good for their businesses, helping to attract and retain talent.In 2013, there were 40,456 marriages in Maryland, an increase of 23% from the year prior thought to be largely attributed to the legalization of same-sex marriage on January 1.