2020

8.0

2014

7.6

2009

6.4

2014

5.2

2016

6.1

2005

6.2

2000

6.2

1972

6.8

1991

6.0

1988

5.8

1990

7.5

1993

7.8

1996

7.6

2024

6.5

1961

3.7

2006

6.0

1943

6.1

1992

5.6

2000

6.2

1993

5.8