La fertilidad de la tierra

5

/

1985

5.4

/

2009

6.1

/

2010

7

/

2006

6.7

/

2010

5.6

/

2010

5.477

/

1993

6.5

/

2024

5.433

/

2006

9.3

/

2012

7.6

/

1970

6.2

/

1996

8.3

/

NaN

6.659

/

2024

7.7

/

2008

5.2

/

2017

5.9

/

2024

7.1

/

2024

7.109

/

1999

8.786

/

2025