2000

6.3

2011

6.4

2006

5.1

1990

7.3

2023

6.6

2024

7.1

1961

6.9

1956

6.2

2002

7.7

1979

7.1

1991

6.7

1986

6.0

1985

6.5

1988

6.4

1996

6.1

1986

5.6

2004

6.6

1970

7.3

2025

5.5

1955

7.0