2020

7.8

2002

8.2

1998

7.0

2022

7.0

2005

7.7

1999

8.4

2021

7.6

1996

6.4

2001

7.8

1990

6.9

1977

7.3

1983

7.8

2005

7.6

2001

8.5

2008

8.1

2005

7.0

2013

7.9

1969

7.8

1990

7.8

1993

8.0