Aņo	Total nacional	Tierras de temporal	Tierras de riego
1940	1.9		
1941	2.0		
1942	2.1		
1943	2.3		
1944	2.3		
1945	2.2		
1946	3.2	3.4	2.1
1947	2.5	2.6	2.4
1948	2.7	2.7	2.3
1949	2.7	2.7	3.4
1950	2.4	2.3	3.2
1951	2.3	2.3	2.7
1952	2.5	2.4	3.4
1953	2.5	2.5	2.8
1954	2.6	2.4	3.5
1955	3.1	3.1	3.3
1956	2.9	2.7	3.4
1957	3.2	3.2	3.6
1958	3.3	3.2	3.9
1959	3.2	3.1	4.3
1960	4.4	4.4	4.3
1961	3.7	3.4	5.5
1962	4.0	3.7	5.6
1963	4.0	3.5	6.9
1964	4.2	3.8	6.3
1965	4.3	3.9	6.5
1966	4.3	3.9	6.9
1967	3.9	3.5	6.2
1968	3.9	3.5	6.5
1969	4.4	3.9	6.4
1970	4.9	4.6	6.9
1971	5.1	5.6	7.4
1972	5.3	4.8	7.3
1973	5.9	5.5	7.9
1974	5.9	5.4	7.9
1975	5.7	5.2	7.6
1976	6.0	5.3	8.9
1977			
1978			
1979