 The number of stay @-@ at @-@ home dads began gradually increasing in the late 20th century , especially in developed Western nations . The recent statistic that <unk> Research released , showed a report in June 2014 that found 2 million men to be stay @-@ at @-@ home dads . However , in 2010 , the number of stay @-@ at @-@ home dads had reached its highest point of 2 @.@ 2 million . 
