It corresponds to detrended values of the SRI index, for the period 1901-2012 
if I am not wrong.
Note that it corresponds to precipitation variability accumulated during the 
rainy season in Central West Argentina, that is from October to March, so the 
year corresponds to the end of the season (1900/01 and 2011/12).
   1901.      -34.3719978    
   1902.       11.8554001    
   1903.      -33.2059975    
   1904.       104.120697    
   1905.       33.1058998    
   1906.       38.0704994    
   1907.       1.45639992    
   1908.       16.9424992    
   1909.      -37.1552010    
   1910.      -1.31779993    
   1911.      -14.9489994    
   1912.      -28.7432995    
   1913.      -20.0697002    
   1914.       22.4590988    
   1915.      -15.0826998    
   1916.      -29.3139000    
   1917.      -32.3069000    
   1918.       21.0221996    
   1919.       60.3910980    
   1920.       38.6396980    
   1921.       13.9858999    
   1922.       28.0191994    
   1923.       41.0849991    
   1924.      -3.00799990    
   1925.       23.5849991    
   1926.       23.3909988    
   1927.       42.0542984    
   1928.      -20.6968994    
   1929.      -12.9904995    
   1930.      -17.9905987    
   1931.      0.382799983    
   1932.      -7.32900000    
   1933.      -1.83419991    
   1934.      -49.3457985    
   1935.      -16.5939999    
   1936.      -30.2244987    
   1937.      -27.9993000    
   1938.      -39.0391006    
   1939.      -42.8247986    
   1940.       15.1941996    
   1941.       21.3799992    
   1942.      -37.6166992    
   1943.      -12.8822994    
   1944.       58.3199997    
   1945.       26.9410992    
   1946.      -2.76859999    
   1947.      -20.2157993    
   1948.      -24.5042000    
   1949.      -18.7976990    
   1950.      -29.5664997    
   1951.      -45.4306984    
   1952.      -12.2130995    
   1953.      -9.51329994    
   1954.      -15.5228996    
   1955.      -24.0627995    
   1956.       20.6068001    
   1957.       18.3486996    
   1958.      -7.36089993    
   1959.      -2.28149986    
   1960.       12.8886995    
   1961.      -24.1190987    
   1962.      -5.80189991    
   1963.       22.3471985    
   1964.      -3.07889986    
   1965.     -0.550399959    
   1966.      -26.9687996    
   1967.      -28.7228985    
   1968.       2.76219988    
   1969.      -22.7465992    
   1970.      -2.21230006    
   1971.      -42.4240990    
   1972.      -38.6154976    
   1973.       29.2773991    
   1974.       32.7810974    
   1975.       18.8034000    
   1976.      -24.4643002    
   1977.       20.0026989    
   1978.       25.0126991    
   1979.       40.6848984    
   1980.       11.4070997    
   1981.       12.6169996    
   1982.       4.94079971    
   1983.      -4.46180010    
   1984.       27.7698002    
   1985.       14.9832001    
   1986.     -0.824299991    
   1987.       2.72839999    
   1988.     -0.331000000    
   1989.      -39.1595001    
   1990.       13.4551001    
   1991.       11.3823996    
   1992.       38.7257996    
   1993.       32.0425987    
   1994.      -36.9491997    
   1995.      -8.74219990    
   1996.      -23.6065998    
   1997.       24.1246986    
   1998.       32.2878990    
   1999.      -11.5162001    
   2000.       50.8398972    
   2001.       20.0835991    
   2002.      -6.74580002    
   2003.      -4.75169992    
   2004.      -18.3668995    
   2005.       5.26319981    
   2006.      -36.3805008    
   2007.       17.2905998    
   2008.       21.4021988    
   2009.      -17.6506996    
   2010.      -35.2810974    
   2011.       16.3407001