| Year | Rank | Trend | +/- | Quantity |
|---|---|---|---|---|
| 2013 | ||||
| 2012 | ||||
| 2011 | ||||
| 2010 | 924 | +21 | 280 | |
| 2009 | 945 | -112 | 282 | |
| 2008 | 833 | -63 | 340 | |
| 2007 | 770 | -53 | 377 | |
| 2006 | 717 | -80 | 394 | |
| 2005 | 637 | +34 | 439 | |
| 2004 | 671 | -104 | 410 | |
| 2003 | 567 | -52 | 493 | |
| 2002 | 515 | -53 | 532 | |
| 2001 | 462 | -44 | 601 | |
| 2000 | 418 | -19 | 679 | |
| 1999 | 399 | -34 | 701 | |
| 1998 | 365 | -30 | 786 | |
| 1997 | 335 | -17 | 852 | |
| 1996 | 318 | -26 | 882 | |
| 1995 | 292 | -29 | 948 | |
| 1994 | 263 | -21 | 1,064 | |
| 1993 | 242 | -16 | 1,159 | |
| 1992 | 226 | -20 | 1,237 | |
| 1991 | 206 | -10 | 1,460 | |
| 1990 | 196 | -16 | 1,500 | |
| 1989 | 180 | -9 | 1,545 | |
| 1988 | 171 | -12 | 1,657 | |
| 1987 | 159 | -15 | 1,742 | |
| 1986 | 144 | -8 | 1,978 | |
| 1985 | 136 | -15 | 2,121 | |
| 1984 | 121 | +1 | 2,305 | |
| 1983 | 122 | -13 | 2,415 | |
| 1982 | 109 | -10 | 2,750 | |
| 1981 | 99 | +4 | 2,943 | |
| 1980 | 103 | -3 | 2,927 | |
| 1979 | 100 | +1 | 2,994 | |
| 1978 | 101 | -3 | 2,922 | |
| 1977 | 98 | -9 | 2,916 | |
| 1976 | 89 | -11 | 3,172 | |
| 1975 | 78 | +1 | 3,612 | |
| 1974 | 79 | -10 | 3,858 | |
| 1973 | 69 | -1 | 4,180 | |
| 1972 | 68 | -7 | 4,570 | |
| 1971 | 61 | -7 | 5,449 | |
| 1970 | 54 | -5 | 6,406 | |
| 1969 | 49 | -2 | 6,862 | |
| 1968 | 47 | -4 | 7,305 | |
| 1967 | 43 | +3 | 8,102 | |
| 1966 | 46 | -1 | 8,703 | |
| 1965 | 45 | -7 | 9,682 | |
| 1964 | 38 | 0 | 10,556 | |
| 1963 | 38 | +2 | 11,039 | |
| 1962 | 40 | -5 | 11,059 | |
| 1961 | 35 | 0 | 11,966 | |
| 1960 | 35 | -1 | 11,845 | |
| 1959 | 34 | -1 | 11,643 | |
| 1958 | 33 | +3 | 11,448 | |
| 1957 | 36 | -4 | 11,180 | |
| 1956 | 32 | +6 | 10,841 | |
| 1955 | 38 | +9 | 9,613 | |
| 1954 | 47 | +3 | 8,504 | |
| 1953 | 50 | +10 | 7,723 | |
| 1952 | 60 | +4 | 6,810 | |
| 1951 | 64 | +1 | 6,192 | |
| 1950 | 65 | -2 | 5,627 | |
| 1949 | 63 | 0 | 5,607 | |
| 1948 | 63 | +22 | 5,553 | |
| 1947 | 85 | +11 | 4,390 | |
| 1946 | 96 | 0 | 3,683 | |
| 1945 | 96 | 0 | 2,895 | |
| 1944 | 96 | +4 | 2,817 | |
| 1943 | 100 | -2 | 2,928 | |
| 1942 | 98 | -3 | 2,799 | |
| 1941 | 95 | +7 | 2,673 | |
| 1940 | 102 | -9 | 2,441 | |
| 1939 | 93 | -1 | 2,613 | |
| 1938 | 92 | +3 | 2,763 | |
| 1937 | 95 | -6 | 2,700 | |
| 1936 | 89 | -3 | 2,755 | |
| 1935 | 86 | -9 | 2,863 | |
| 1934 | 77 | -7 | 3,192 | |
| 1933 | 70 | -10 | 3,266 | |
| 1932 | 60 | -1 | 3,815 | |
| 1931 | 59 | -9 | 4,034 | |
| 1930 | 50 | -1 | 4,779 | |
| 1929 | 49 | 0 | 5,068 | |
| 1928 | 49 | +3 | 5,328 | |
| 1927 | 52 | +12 | 5,127 | |
| 1926 | 64 | +16 | 4,408 | |
| 1925 | 80 | +16 | 3,514 | |
| 1924 | 96 | +9 | 3,022 | |
| 1923 | 105 | +4 | 2,615 | |
| 1922 | 109 | -2 | 2,542 | |
| 1921 | 107 | +1 | 2,613 | |
| 1920 | 108 | -6 | 2,426 | |
| 1919 | 102 | 0 | 2,380 | |
| 1918 | 102 | -5 | 2,510 | |
| 1917 | 97 | +1 | 2,491 | |
| 1916 | 98 | -5 | 2,348 | |
| 1915 | 93 | -1 | 2,309 | |
| 1914 | 92 | +5 | 1,794 | |
| 1913 | 97 | 0 | 1,403 | |
| 1912 | 97 | +3 | 1,268 | |
| 1911 | 100 | -4 | 919 | |
| 1910 | 96 | +10 | 926 | |
| 1909 | 106 | -12 | 724 | |
| 1908 | 94 | +5 | 795 | |
| 1907 | 99 | 0 | 734 | |
| 1906 | 99 | +9 | 669 | |
| 1905 | 108 | 0 | 598 | |
| 1904 | 108 | -6 | 561 | |
| 1903 | 102 | +7 | 553 | |
| 1902 | 109 | -15 | 549 | |
| 1901 | 94 | +8 | 554 | |
| 1900 | 102 | -1 | 659 | |
| 1899 | 101 | +6 | 532 | |
| 1898 | 107 | -7 | 540 | |
| 1897 | 100 | +8 | 533 | |
| 1896 | 108 | -5 | 469 | |
| 1895 | 103 | -2 | 515 | |
| 1894 | 101 | 0 | 484 | |
| 1893 | 101 | +6 | 469 | |
| 1892 | 107 | 0 | 417 | |
| 1891 | 107 | -6 | 370 | |
| 1890 | 101 | +5 | 401 | |
| 1889 | 106 | -5 | 359 | |
| 1888 | 101 | +7 | 377 | |
| 1887 | 108 | +4 | 284 | |
| 1886 | 112 | +2 | 276 | |
| 1885 | 114 | -2 | 232 | |
| 1884 | 112 | -8 | 240 | |
| 1883 | 104 | +17 | 241 | |
| 1882 | 121 | -13 | 170 | |
| 1881 | 108 | +4 | 173 | |
| 1880 | 112 | 153 |
