2001

2.7

1975

5.1

1977

5.7

1978

5.0

1991

5.9

2018

6.6

1985

5.1

2019

4.6

2018

4.8

1938

7.1

2005

7.1

1995

5.4

1964

7.6

1957

8.2

1999

7.4

1999

8.5

1985

7.0

2023

4.0

2024

0.0

1959

5.2