The amortized cost and estimated fair value of short-term and long-term investments by contractual maturity were as follows at December 31, 2001 and December 31, 2000 (in thousands):

As of December 31, 2001	Amortized Cost	Fair Value
Maturities:
Within 1 year	$ 126,867	$ 127,642
1 to 5 years	230,626	237,597
6 to 10 years	89,703	91,179
Over 10 years	181,889	183,709
Total short-term and long-term securities	$ 629,085	$ 640,127

As of December 31, 2000	Amortized Cost	Fair Value
Maturities:
Within 1 year	$ 171,707	$ 171,953
1 to 5 years	240,124	243,193
6 to 10 years	60,392	61,958
Over 10 years	18,569	19,117
Total short-term and long-term securities	$ 490,792	$ 496,221

Proceeds from the sale and maturities of investments were approximately $435.6 million, $425.3 million and $253.5 million for the years ended December 31, 2001, 2000 and 1999, respectively. Gross investment gains of approximately $4.7 million and gross investment losses of approximately $2.2 million were realized on these sales for the year ended December 31, 2001. This compares to gross investment gains of approximately $0.1 million and gross investment losses of approximately $1.1 million on these sales for the year ended December 31, 2000, and gross investment gains of approximately $1.0 million and gross investment losses of approximately $1.2 million on these sales for the year ended December 31, 1999.

E. INCOME TAXES  

The provision for income taxes consists of the following (in thousands):    

	Years Ended December 31,
	2001	2000	1999
Current provision:
Federal	$ 42,298	$ 21,996	$ 15,606
State	7,851	2,945	2,921
Deferred provision:
Federal	1,263	13,358	11,092
State	302	2,429	2,946
	$ 51,714	$ 40,728	$ 32,565

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