1987

7.9

2019

6.3

2005

6.4

2004

6.2

2014

5.7

1997

6.1

1984

7.0

1995

5.6

1993

6.1

1994

5.7

1992

5.3

2005

7.0

1994

7.4

2003

6.7

2023

6.3

2002

6.5

1951

7.2

2018

6.7

1998

6.9

1969

7.1