. for the years ended december 31 , 2001 , 2000 and 1999 , of the total net operating income of $ 63607 , $ 53152 and $ 48966 , $ 46238 , $ 39881 and $ 43700 represented net operat- ing income from real estate assets and $ 17369 , $ 13271 and $ 5266 represents net operating income from structured finance investments , respectively