1967

6.4

1975

4.5

1971

6.8

1997

6.1

1965

6.8

2013

6.1

2019

7.7

1984

6.5

2022

7.4

2007

5.4

2014

5.9

2003

6.2

2020

6.9

1998

6.2

1964

7.0

1999

5.6

2020

7.3

5.0

2011

7.2