Using the table below showing median income by year, how many years did it take for the annual household income to double from its value in 1982?
Year 2012 2010 2008 2006 2004
2002 2000 1998 1996
1994 1992 1990
Median Income $48,291 $46,658 $47,624 $45,618 $41,952 $40,125 $39,772 $36,802 $33,447 $30,247 $28,424 $27,522
Year 1988 1986 1984 1982 1980 1978 1976 1974
1972
Median Income $24.772 $22,482 $20,196 $18,347 $15,944 $13,098 $10,947 $9,554 $8,198
1970
$7,368
1968
$6,421
