2019

7.7

2013

6.1

2015

8.1

1995

5.7

2009

6.1

1987

4.0

1959

6.0

2001

6.7

1992

7.0

1941

7.0

1938

6.6

1958

7.5

2020

6.8

1965

6.3

1989

5.9

2014

5.3

1990

6.7

2009

7.4

6.4