2006

6.2

1986

7.0

2000

5.5

1987

6.8

1996

6.0

1990

6.6

1977

6.8

2007

6.5

2023

7.1

1999

6.1

1990

6.9

2015

7.0

1991

6.3

2008

6.1

2002

5.8

1989

6.3

2006

6.3

1985

6.1

1963

3.3

2021

7.3