1993

6.1

2012

7.9

2015

6.4

2023

6.4

6.5

1968

6.9

1985

6.8

2015

6.5

1953

4.8

1982

5.9

2024

7.6

1972

6.6

2011

6.4

1965

6.4

2020

6.3

1986

6.2

2010

7.3

2008

5.2

6.4

2005

6.0