2006

6.1

1996

6.5

1992

6.4

2007

5.7

2014

6.9

2020

6.5

2021

7.2

2012

6.3

2005

5.2

2003

7.3

2004

5.5

1999

5.9

1990

5.1

2022

7.7

1966

6.5

2017

6.6

2024

8.2

1968

6.4

1988

6.5

2017

5.9