1996

6.5

2017

6.9

2003

6.6

2019

6.5

1992

5.0

2014

7.0

1975

6.4

2004

6.3

2013

6.0

2001

6.8

2019

7.0

2024

6.8

1988

6.2

2021

6.7

1969

6.6

2014

5.5

2002

7.5

2022

5.1

2013

6.7

1992

6.5