1958

8.2

1971

6.8

2001

6.2

1980

8.2

1999

8.0

1986

7.6

2002

6.8

2001

6.1

2022

6.1

2003

7.2

1998

6.1

1990

7.7

1995

6.5

1965

7.2

1994

6.6

1991

7.3

2022

4.3

2007

6.4

2019

6.7

2023

5.9