1957

8.2

1986

5.4

1972

6.9

2019

8.5

1977

6.6

1975

5.7

1966

6.2

2023

5.9

1982

6.7

2011

6.6

2007

7.0

2023

6.6

2015

6.3

1987

6.0

1993

7.0

2023

7.7

2002

7.1

2022

7.3

2021

7.5

1981

5.0