year
|
East (36)
|
North (34)
|
Southeast (24)
|
West (304)
|
1992
|
10.3
|
1
|
22.2
|
19.7
|
1993
|
11.3
|
0.9
|
19
|
19.8
|
1994
|
10.1
|
0.9
|
16.4
|
20.3
|
1995
|
12.2
|
0.9
|
19.4
|
20.8
|
1996
|
16.6
|
1
|
17.9
|
20.8
|
1997
|
12.9
|
1.1
|
25.6
|
21
|
1998
|
13.2
|
1.2
|
28.8
|
21
|
1999
|
10.6
|
1.2
|
22.2
|
21.6
|
2000
|
10.9
|
1.2
|
24.7
|
20.8
|
2001
|
10.2
|
1.2
|
22.8
|
20.7
|
2002
|
9.1
|
1.2
|
18.7
|
20.6
|
2003
|
9.1
|
1.5
|
22.4
|
21
|
2004
|
9.6
|
1.6
|
20.4
|
21.3
|
2005
|
10.3
|
1.3
|
22
|
21.5
|
2006
|
10.5
|
1
|
22.5
|
21.3
|
2007
|
10.6
|
1.1
|
22
|
21.5
|
2008
|
13.2
|
1.2
|
21.4
|
20.8
|
2009
|
11.8
|
1.2
|
24.2
|
20.5
|
2010
|
11.3
|
1
|
21.1
|
20.9
|
2011
|
10.1
|
1.2
|
22.4
|
20.1
|
2012
|
10.8
|
1
|
26.3
|
19.7
|