| Year | Number of sets | Total items | Total graded |
|---|---|---|---|
| Totals | 994 | 4,646 | 10,884 |
| 1934-36 | 1 | 1 | 1 |
| 1948 | 1 | 10 | 11 |
| 1957-58 | 1 | 24 | 34 |
| 1958-59 | 1 | 1 | 1 |
| 1961 | 1 | 2 | 2 |
| 1961-62 | 1 | 66 | 191 |
| 1963 | 1 | 1 | 1 |
| 1969-70 | 1 | 24 | 49 |
| 1970-71 | 2 | 19 | 30 |
| 1971 | 2 | 4 | 4 |
| 1971-72 | 2 | 13 | 19 |
| 1972 | 1 | 1 | 1 |
| 1972-73 | 1 | 13 | 24 |
| 1973-74 | 1 | 6 | 11 |
| 1974-75 | 1 | 8 | 16 |
| 1975-76 | 1 | 9 | 23 |
| 1976-77 | 1 | 2 | 2 |
| 1977-78 | 1 | 46 | 101 |
| 1978-79 | 1 | 5 | 9 |
| 1979-80 | 1 | 13 | 16 |
| 1980 | 3 | 4 | 5 |
| 1980-81 | 2 | 25 | 64 |
| 1981 | 1 | 1 | 1 |
| 1981-82 | 1 | 30 | 108 |
| 1982 | 1 | 1 | 1 |
| 1983 | 2 | 3 | 3 |
| 1983-84 | 1 | 2 | 2 |
| 1984 | 2 | 2 | 2 |
| 1984-85 | 1 | 3 | 3 |
| 1985 | 1 | 5 | 5 |
| 1985-86 | 3 | 3 | 3 |
| 1986 | 3 | 7 | 12 |
| 1986-87 | 5 | 46 | 376 |
| 1987-88 | 2 | 24 | 142 |
| 1988 | 6 | 6 | 8 |
| 1988-89 | 3 | 37 | 318 |
| 1989 | 9 | 13 | 19 |
| 1989-90 | 8 | 58 | 376 |
| 1990 | 6 | 6 | 9 |
| 1990-91 | 9 | 134 | 805 |
| 1991 | 9 | 24 | 244 |
| 1991-92 | 15 | 212 | 945 |
| 1992 | 12 | 29 | 45 |
| 1992-93 | 15 | 146 | 655 |
| 1993 | 6 | 11 | 21 |
| 1993-94 | 21 | 117 | 233 |
| 1994 | 15 | 33 | 91 |
| 1994-95 | 21 | 103 | 163 |
| 1995 | 6 | 6 | 8 |
| 1995-96 | 26 | 195 | 318 |
| 1996 | 11 | 21 | 35 |
| 1996-97 | 41 | 256 | 670 |
| 1996-98 | 2 | 2 | 2 |
| 1997 | 11 | 40 | 42 |
| 1997-98 | 34 | 209 | 300 |
| 1998 | 11 | 137 | 153 |
| 1998-99 | 43 | 320 | 592 |
| 1999 | 9 | 16 | 16 |
| 1999-00 | 40 | 155 | 205 |
| 2000 | 3 | 3 | 4 |
| 2000-01 | 32 | 76 | 92 |
| 2001 | 4 | 5 | 5 |
| 2001-02 | 19 | 29 | 38 |
| 2002 | 6 | 9 | 12 |
| 2002-03 | 18 | 38 | 46 |
| 2003 | 6 | 35 | 43 |
| 2003-04 | 40 | 172 | 357 |
| 2004 | 6 | 7 | 12 |
| 2004-05 | 17 | 44 | 65 |
| 2005-06 | 16 | 53 | 67 |
| 2006 | 1 | 1 | 1 |
| 2006-07 | 15 | 45 | 55 |
| 2007 | 2 | 2 | 2 |
| 2007-08 | 16 | 50 | 61 |
| 2008-09 | 9 | 27 | 34 |
| 2009 | 1 | 1 | 1 |
| 2009-10 | 12 | 25 | 35 |
| 2010-11 | 7 | 9 | 13 |
| 2011 | 1 | 1 | 1 |
| 2011-12 | 4 | 7 | 56 |
| 2012 | 6 | 7 | 9 |
| 2012-13 | 13 | 42 | 52 |
| 2013 | 2 | 2 | 3 |
| 2013-14 | 9 | 14 | 15 |
| 2014 | 2 | 2 | 2 |
| 2014-15 | 8 | 20 | 23 |
| 2015 | 1 | 1 | 1 |
| 2015-16 | 8 | 17 | 20 |
| 2016 | 2 | 2 | 4 |
| 2016-17 | 12 | 23 | 27 |
| 2017 | 1 | 1 | 1 |
| 2017-18 | 12 | 28 | 29 |
| 2018 | 1 | 1 | 5 |
| 2018-19 | 19 | 100 | 145 |
| 2019 | 6 | 9 | 10 |
| 2019-20 | 40 | 203 | 344 |
| 2020 | 10 | 18 | 25 |
| 2020-21 | 32 | 245 | 653 |
| 2021 | 16 | 19 | 20 |
| 2021-22 | 30 | 151 | 304 |
| 2022 | 6 | 8 | 10 |
| 2022-23 | 19 | 97 | 144 |
| 2023 | 4 | 5 | 5 |
| 2023-24 | 22 | 178 | 328 |
| 2024 | 16 | 34 | 52 |
| 2024-25 | 12 | 45 | 53 |
| 2025 | 2 | 2 | 2 |
| 2025-26 | 5 | 19 | 45 |
| Anonymous | 1 | 1 | 2 |
| Custom | 1 | 2 | 4 |
| Living Leg | 1 | 1 | 1 |