1992

6.9

1980

7.3

2010

6.7

2002

7.5

2021

8.6

2014

7.4

2003

8.2

1969

7.3

2004

7.7

1984

7.0

1975

7.3

1998

7.1

1984

7.5

1999

6.7

1994

7.6

2024

7.5

2015

7.0

1998

7.2

1987

8.4

1989

7.7