1990

6.9

2010

8.2

1995

7.2

2007

8.3

1996

8.5

1985

7.5

2021

7.3

2005

7.7

2015

8.2

2012

8.2

1996

7.7

1999

7.7

2017

7.9

2008

8.3

2010

8.1

2000

6.5

2022

6.4

1962

7.2

1989

7.5

1999

7.8