1935        0
1936        0
1937        0
1938        0
1939        0
1940        0
1941        0
1942        0
1943        0
1944        0
1945        0
1946        0
1947        0
1948        0
1949        0
1950        0
1951        0
1952        0
1953        0
1954        0
1955        0
1956        0
1957        0
1958        0
1959        0
1960        0
1961        0
1962        0
1963        0
1964        0
1965        0
1966     5000
1967     5000
1968     5100
1969     5200
1970     5300
1971     5400
1972     5500
1973     5600
1974     6600
1975     7400
1976     8300
1977     9300
1978    10400
1979    11700
1980    13100
1981    14700
1982    16500
1983    18500
1984    20800
1985    23400
1986    25800
1987    25900
1988    26500
1989    27700
1990    28900
1991    30500
1992    32200
1993    33400
1994    34400
1995    34900
1996    35400
1997    35800
1998    36900
1999    37400
2000    37600
2001    38300
2002    39100
2003    39900
2004    40500
2005    41100
2006    42100
2007    43700
2008    44900
2009    46300
2010    47200
2011    48300
2012    50100
2013    51100
2014    52500
2015    53600
2016    54900
2017    55300
2018    55900
2019    57400
2020    58700
2021    61600
2022    64900
2023    66600
2024    73200
2025    81200