Year	Catalogued	Offered	Sold	Aggregate	Average	Median
2023	229	187	79	533,100	6,748	4,000
2022	209	184	100	599,400	5,994	4,000
2021	159	141	82	567,000	6,915	5,500
2020	190	137	72	439,700	6,107	3,000
2019	189	154	85	547,600	6,442	3,000
2018	229	195	97	599,100	6,176	3,000
2017	257	219	129	766,000	5,938	3,500
2016	205	172	90	726,400	8,071	4,400
2011	156	128	49	164,300	3,353	1,700
2010	219	175	57	241,000	4,228	1,800
2009	209	165	60	140,650	2,344	1,250
2008	318	197	91	263,850	2,899	1,600
2007	730	353	158	887,200	5,615	2,550
2006	310	244	162	1,510,950	9,327	3,800
2005	229	190	100	512,400	5,124	2,500
2004	253	202	116	483,650	4,169	2,450
2003	239	200	125	550,450	4,404	2,500
2002	162	118	71	276,200	3,890	3,000