1998

5.0

2003

5.7

2002

6.4

1995

6.0

1991

6.7

2009

6.5

1976

5.2

1989

6.8

2022

6.4

1988

6.3

1985

6.5

2004

4.7

1984

5.4

1996

6.2

1988

6.2

1983

4.6

2005

6.8

2006

5.8

1984

4.8

1986

5.8