1977

4.1

2011

5.6

2021

3.6

1971

4.8

2009

6.0

1987

0.0

2020

3.5

2022

4.3

2002

6.4

2013

0.0

2022

8.5

2005

6.3

1997

7.6

2024

6.0

2003

3.8

2017

6.7

2008

6.8

1982

4.5

1991

5.8

1989

6.0