Simplify the following text for a Grade 8 native English-speaking person.
Original: In their 42 years in the NFL , the Falcons have a record of 262-386-6 with division championships in 1980 , 1998 and 2004 , and appeared in Super Bowl XXXIII in Miami , Florida .
Simplified: In their 45 years of existence , the Falcons have compiled a record of 298 â `` 402 â `` 6 with division championships in 1980 , 1998 , 2004 , and 2010 . Their first and only Super Bowl appearance was Super Bowl XXXIII in 1999 .