2019

7.6

2015

7.0

1985

7.8

1960

7.4

2017

8.0

1996

7.7

1997

7.3

1999

7.8

2020

8.5

1961

7.5

2017

7.9

2003

7.2

2015

8.0

1998

6.8

1991

7.2

2018

8.6

2002

7.6

1993

8.0

2020

6.9

1999

7.8