2020

6.5

1996

6.5

1988

6.5

2011

6.6

2020

6.7

2014

6.9

1989

5.5

1966

6.2

1997

6.1

2016

6.1

1988

6.3

2009

5.9

1972

7.1

2004

7.5

1989

7.3

1971

6.8

1953

7.2

1999

6.8

2005

5.2

1999

4.6