1972

4.5

1977

5.5

1973

5.7

1981

5.8

2003

7.4

1991

6.1

1991

6.7

2005

5.2

2022

7.0

1983

4.0

2017

0.0

1998

7.1

1990

6.0

1977

7.1

1991

6.4

1999

6.5

2006

5.9

2015

6.0

2022

7.3

2016

0.0