2010

7.5

2019

7.0

2018

8.2

1990

6.9

2021

7.1

1976

7.9

1972

8.4

2020

8.5

2011

8.3

2016

8.1

1984

8.0

2019

8.0

2013

7.5

1991

8.2

2007

7.6

1958

7.5

1989

6.9

2011

8.1

2007

7.7

2013

7.4