NGC/F Contributie
Historische ontwikkeling van de NGC/F contributie voor (A en B) leden:
| Periode | Volwassen leden | Jeugdleden |
| 1914 | ||
| 1915 | ||
| 1916 | ||
| 1917 | ||
| 1918 | ||
| 1919 | ||
| 1920 | ||
| 1921 | ||
| 1922 | ||
| 1923 | ||
| 1924 | ||
| 1925 | ||
| 1926 | ||
| 1927 | ||
| 1928 | ||
| 1929 | ||
| 1930 | ||
| 1931 | ||
| 1932 | ||
| 1933 | ||
| 1934 | ||
| 1935 | ||
| 1936 | ||
| 1937 | ||
| 1938 | ||
| 1939 | ||
| 1940 | 1,- | |
| 1941 | 0,50 | |
| 1942 | 0,50 | |
| 1943 | 0,50 | |
| 1944 | 0,50 | |
| 1945 | ||
| 1946 | 2,50 | |
| 1947 | 2,50 | |
| 1948 | 4,- | |
| 1949 | 4,- | 2,50 |
| 1950 | ||
| 1951 | ||
| 1952 | 5,- | 2,50 |
| 1953 | ||
| 1954 | ||
| 1955 | 5,- | 2,50 |
| 1956 | 5,- | 2,50 |
| 1957 | 5,- | 2,50 |
| 1958 | 5,- | 2,50 |
| 1959 | 5,- | 2,50 |
| 1960 | 7,- | 3,50 |
| 1961 | 7,- | 3,50 |
| 1962 | 10,- | 3,50 |
| 1963 | 10,- | 3,50 |
| 1964 | 10,- | 3,50 |
| 1965 | 10,- | 3,50 |
| 1966 | 12,- | 3,50 |
| 1967 | 12,- | 3,50 |
| 1968 | 12,- | 3,50 |
| 1969 | 12,- | 3,50 |
| 1970 | 12,- | 3,50 |
| 1971 | 20,- | 10,- |
| 1972 | 22,- | 11,- |
| 1973 | 23,- | 11,- |
| 1974 | 24,- | 12,- |
| 1975 | 25,- | 12,- |
| 1976 | 26,- | 13,- |
| 1977 | 27,- | 13,50 |
| 1978 | 35,- | 17,50 |
| 1979 | 36,- | 18,- |
| 1980 | 37,- | 18,50 |
| 1981 | 37,- | 18,50 |
| 1982 | 37,- | 18,50 |
| 1983 | 37,- | 18,50 |
| 1984 | 37,- | 18,50 |
| 1985 | 37,- | 18,50 |
| 1986 | 39,- | 19,50 |
| 1987 | 39,- | 19,50 |
| 1988 | 39,- | 19,50 |
| 1989 | 52,50 | 26,25 |
| 1990 | 52,50 | 26,25 |
| 1991 | 52,50 | 26,25 |
| 1992 | 52,50 | 26,25 |
| 1993 | 52,50 | 26,25 |
| 1994 | 52,50 | 26,25 |
| 1995 | 52,50 | 26,25 |
| 1996 | 45,- | 22,50 |
| 1997 | 45,- | 22,50 |
| 1998 | 45,- | 22,50 |
| 1999 | 45,- | 22,50 |
| 2000 | 45,- | 22,50 |
| 2001 | 45,- | 22,50 |
| 2002 | 18,- | 9,- |
| 2003 | 16,- | 8,- |
| 2004 | 18,- | 9,- |
| 2005 | 18,- | 9,- |
| 2006 | 17,- | 8,50 |
| 2007 | 17,- | 8,50 |
| 2008 | 16,- | 8,- |
| 2009 | 16,- | 8,- |
| 2010 | 16,- | 8,- |
| 2011 | ||
| 2012 | ||
| 2013 | ||
| 2014 | ||
| 2015 | ||
| 2016 | ||
| 2017 | ||
| 2018 | ||
| 2019 | ||
| 2020 | ||
| 2021 | ||
| 2022 | ||
| 2023 | ||
| 2024 | ||