1985

7.8

1995

6.9

1996

7.2

2008

7.5

2021

5.6

2001

7.3

2001

6.8

1969

7.6

2002

7.6

1996

7.3

2001

7.3

1963

7.5

1998

7.4

2017

7.3

2015

8.0

2021

8.0

2003

5.6

1987

6.4

1962

8.4

1991

8.3