| Year | Number of sets | Total items | Total graded |
|---|---|---|---|
| Totals | 1,223 | 5,728 | 13,493 |
| 1909-11 | 1 | 1 | 1 |
| 1934-36 | 1 | 1 | 1 |
| 1948 | 1 | 11 | 12 |
| 1952 | 1 | 1 | 1 |
| 1957 | 1 | 2 | 2 |
| 1957-58 | 1 | 24 | 34 |
| 1958-59 | 1 | 1 | 1 |
| 1961 | 2 | 3 | 3 |
| 1961-62 | 1 | 66 | 203 |
| 1962 | 1 | 1 | 1 |
| 1963 | 1 | 1 | 1 |
| 1964 | 2 | 3 | 5 |
| 1965-66 | 1 | 2 | 2 |
| 1969-70 | 1 | 25 | 51 |
| 1970-71 | 2 | 19 | 31 |
| 1971 | 2 | 4 | 4 |
| 1971-72 | 2 | 13 | 19 |
| 1972 | 2 | 9 | 9 |
| 1972-73 | 1 | 14 | 25 |
| 1973-74 | 1 | 6 | 11 |
| 1974-75 | 1 | 9 | 17 |
| 1975 | 1 | 1 | 1 |
| 1975-76 | 1 | 9 | 23 |
| 1976-77 | 1 | 3 | 3 |
| 1977-78 | 1 | 46 | 102 |
| 1978-79 | 1 | 6 | 11 |
| 1979 | 1 | 1 | 1 |
| 1979-80 | 1 | 19 | 24 |
| 1980 | 2 | 2 | 4 |
| 1980-81 | 2 | 30 | 76 |
| 1981 | 2 | 4 | 4 |
| 1981-82 | 1 | 30 | 117 |
| 1982 | 1 | 1 | 1 |
| 1983 | 2 | 5 | 5 |
| 1983-84 | 1 | 2 | 2 |
| 1984 | 3 | 3 | 6 |
| 1984-85 | 1 | 6 | 6 |
| 1985 | 1 | 5 | 5 |
| 1985-86 | 4 | 4 | 4 |
| 1986 | 4 | 8 | 13 |
| 1986-87 | 5 | 47 | 392 |
| 1987 | 1 | 13 | 16 |
| 1987-88 | 2 | 25 | 152 |
| 1988 | 7 | 13 | 17 |
| 1988-89 | 4 | 39 | 363 |
| 1989 | 12 | 24 | 39 |
| 1989-90 | 9 | 58 | 422 |
| 1990 | 12 | 58 | 66 |
| 1990-91 | 11 | 141 | 912 |
| 1991 | 11 | 41 | 265 |
| 1991-92 | 17 | 225 | 1,125 |
| 1992 | 15 | 33 | 60 |
| 1992-93 | 18 | 240 | 890 |
| 1993 | 6 | 12 | 22 |
| 1993-94 | 22 | 127 | 326 |
| 1994 | 16 | 35 | 84 |
| 1994-95 | 24 | 115 | 190 |
| 1995 | 8 | 10 | 12 |
| 1995-96 | 29 | 211 | 377 |
| 1996 | 11 | 21 | 35 |
| 1996-97 | 44 | 278 | 803 |
| 1996-98 | 2 | 2 | 2 |
| 1997 | 12 | 41 | 44 |
| 1997-98 | 38 | 243 | 372 |
| 1998 | 13 | 142 | 160 |
| 1998-99 | 46 | 364 | 698 |
| 1999 | 10 | 20 | 20 |
| 1999-00 | 42 | 181 | 252 |
| 2000 | 5 | 5 | 6 |
| 2000-01 | 35 | 96 | 117 |
| 2000-10 | 1 | 1 | 1 |
| 2001 | 7 | 8 | 8 |
| 2001-02 | 24 | 37 | 47 |
| 2002 | 9 | 13 | 16 |
| 2002-03 | 22 | 48 | 59 |
| 2003 | 8 | 40 | 48 |
| 2003-04 | 41 | 196 | 410 |
| 2004 | 8 | 12 | 17 |
| 2004-05 | 21 | 51 | 77 |
| 2005 | 4 | 6 | 6 |
| 2005-06 | 20 | 65 | 83 |
| 2006 | 7 | 9 | 9 |
| 2006-07 | 15 | 48 | 61 |
| 2007 | 4 | 5 | 6 |
| 2007-08 | 17 | 59 | 79 |
| 2008 | 1 | 2 | 2 |
| 2008-09 | 10 | 35 | 49 |
| 2009 | 2 | 2 | 2 |
| 2009-10 | 12 | 27 | 38 |
| 2010 | 3 | 4 | 4 |
| 2010-11 | 7 | 9 | 13 |
| 2011 | 2 | 2 | 2 |
| 2011-12 | 5 | 8 | 57 |
| 2012 | 7 | 8 | 10 |
| 2012-13 | 13 | 44 | 54 |
| 2013 | 4 | 4 | 5 |
| 2013-14 | 10 | 15 | 16 |
| 2014 | 8 | 13 | 13 |
| 2014-15 | 8 | 21 | 24 |
| 2015 | 4 | 12 | 13 |
| 2015-16 | 8 | 23 | 28 |
| 2016 | 6 | 8 | 11 |
| 2016-17 | 13 | 26 | 30 |
| 2017 | 5 | 6 | 6 |
| 2017-18 | 12 | 31 | 32 |
| 2018 | 5 | 7 | 11 |
| 2018-19 | 19 | 104 | 154 |
| 2019 | 9 | 17 | 19 |
| 2019-20 | 46 | 239 | 495 |
| 2020 | 18 | 39 | 46 |
| 2020-21 | 34 | 270 | 736 |
| 2021 | 26 | 44 | 50 |
| 2021-22 | 32 | 164 | 354 |
| 2022 | 15 | 24 | 27 |
| 2022-23 | 22 | 111 | 164 |
| 2023 | 7 | 11 | 15 |
| 2023-24 | 26 | 229 | 503 |
| 2024 | 23 | 57 | 89 |
| 2024-25 | 15 | 103 | 138 |
| 2025 | 15 | 23 | 28 |
| 2025-26 | 13 | 121 | 238 |
| 2026 | 2 | 2 | 2 |
| Anonymous | 1 | 1 | 2 |
| Custom | 1 | 2 | 4 |
| Living Leg | 1 | 1 | 1 |