uempmed
psavert
Jun 1975
Dec 1980
Jun 1986
Nov 1991
May 1997
Jun 1967
Mar 2007
-2
0
2
4
6
8
10
12
14
-3
14.6
something to highlight 1967
something to highlight 2001
Jun 1975
Dec 1980
Jun 1986
Nov 1991
May 1997
Jun 1967
Mar 2007
0
10
-3
14.6