1985

6.1

2010

6.6

2003

6.0

2019

7.7

2001

7.2

1964

7.0

1962

6.9

1971

6.8

2007

6.5

1985

6.8

2007

5.4

1996

6.5

2005

5.8

2022

7.4

1997

6.1

2004

5.7

2016

6.7

1968

6.6

2004

7.1

2015

6.0