1992

6.8

2009

5.9

2015

5.3

1996

6.8

1978

6.8

2010

6.3

2012

6.1

2009

8.3

1966

7.6

1995

6.5

2022

8.5

1994

8.2

2005

6.8

1992

8.2

2020

8.1

2023

8.0

1959

8.4

2024

8.0

2015

6.5

2015

7.6