1999

7.3

1990

6.0

2023

9.2

1998

7.1

1991

6.4

2003

7.4

1996

6.4

1997

7.5

1973

5.7

1981

5.8

2008

7.6

1989

5.8

1994

4.6

1991

6.1

2008

5.3

1981

5.5

2014

4.3

2020

6.7

1963

1.0

1959

7.6