1971

9.0

1988

5.5

2020

7.4

7.8

2021

7.5

2021

6.1

2018

6.0

2001

8.0

2014

6.6

2011

7.1

2015

5.9

2012

6.0

2023

7.8

2000

5.2

2020

6.0

1951

5.8

1987

5.0

1989

7.3

1955

7.2

2008

10.0