1982

6.1

1998

5.5

1997

6.8

1960

5.3

1996

6.4

2005

7.5

2006

0.0

1992

7.1

2018

5.0

1968

6.0

2021

7.9

1997

7.5

1994

0.0

1985

7.8

2022

7.1

2003

7.6