1993

4.6

2002

7.4

1989

7.4

6.8

1972

6.3

2018

7.5

2007

6.7

2019

7.1

1993

7.3

2012

6.0

2021

7.5

1987

6.5

1982

5.7

1953

4.8

1995

7.8

1988

6.4

2020

6.5

2019

9.2

2021

7.7

2019

8.0