2015

6.8

2016

6.7

2018

5.3

1984

6.4

1981

6.0

1953

7.7

1987

5.0

2020

5.1

1980

6.3

1980

5.9

2011

5.9

2019

7.4

2015

3.1

1986

6.7

2009

7.1

1982

6.1

1983

6.7

1984

7.2

1991

7.1

1993

6.4