1961

6.0

1996

6.8

1972

6.9

2004

5.9

1955

6.0

1976

5.6

1959

5.0

2014

5.7

2015

7.1

2022

0.0

2020

0.0

2002

5.8

2006

6.6

2005

6.2

1988

6.3

1986

6.7

1994

6.7

1995

7.3

1974

7.1

2003

6.0