1994

7.0

1997

6.2

1999

7.8

2003

6.7

2004

6.4

2020

5.5

2020

4.8

2015

6.8

2023

5.7

2013

7.3

2012

9.3

2019

6.1

2019

6.1

1985

6.0

1990

7.5

1993

7.8

1996

7.6

1962

7.2

1958

6.8

1962

5.1