1995

7.1

2000

2.0

1999

7.3

2006

7.8

2015

8.0

2019

8.0

2018

6.5

2007

6.8

2021

8.6

1970

6.1

2013

0.0

2012

7.7

1983

6.3

1972

7.0

1992

7.5

2007

6.5

2023

7.0

1991

0.0

1992

7.0

2002

7.3