Year;"Survey count";"Survey dates";Spring;Summer;Autumn;YP;TY;BE;JJ;YP;TY;BE;JJ;YP;TY;BE;JJ
2021;3;"Apr 19–22";"Apr 29";"Jul 19–22";"Jul 15";"Oct 18–21";"Oct 25"
2022;4;"Apr 18–20";"Apr 22";"Jun 20–21";"Jul 15";"Oct 17–18";"Oct 20"
"Aug 22–23";"Aug 26"
2023;3;"Apr 10–12";"Apr 17";"Jul 10–11";"Jul 14";"Oct 10–12";"Oct 16"
2024;2;"Apr 16–18";"Apr 30";"Jul 15–17";"Jul 12";–
Total;12;