Net interest margins continue to tighten for large institutions.
Year End Median net interest margin for banks with assets under $1 billion (percent) Median net interest margin for banks with assets between $1 and $10 billion (percent) Median net interest margin for banks with assets greater than $10 billion (percent)
1990 4.19 3.49 3.31
1991 4.25 3.73 3.54
1992 4.55 4.15 4.03
1993 4.53 4.30 3.96
1994 4.52 4.27 4.01
1995 4.48 4.18 3.91
1996 4.43 4.19 4.00
1997 4.44 4.12 4.11
1998 4.31 4.06 4.01
1999 4.24 4.03 3.99
2000 4.27 3.92 3.80
2001 4.07 3.92 3.77
2002 4.19 4.03 3.94
2003 4.02 3.76 3.67
2004 4.04 3.77 3.48
2005 4.11 3.81 3.46
2006 4.10 3.82 3.33
Source: FDIC