Table 2. Estimated stock numbers.
Year\Age	0	1	2	3	4	5+
1991	144929	201189	148598	44223	4221	17913
1992	62630	92874	96182	69773	17527	12245
1993	135266	40015	44356	44757	27723	16622
1994	194075	85991	19101	20640	17560	24514
1995	223686	121905	40457	8920	8093	23063
1996	162430	140646	56727	18514	3525	17069
1997	136489	102028	64991	25874	7237	11356
1998	104506	85050	47335	29231	10017	10397
1999	200586	64926	39183	21410	11270	11454
2000	177726	128027	29673	17546	8259	12685
2001	534453	114119	58047	13090	6785	11798
2002	750879	355045	51328	25362	5042	10464
2003	785441	504842	162430	22629	9796	8771
2004	321579	539285	232118	72258	8890	10753
2005	377000	222571	250196	103156	29028	11242
2006	384616	265402	104193	111302	41815	23412
2007	421679	269413	123871	46817	44936	37609
2008	459549	293021	124991	55437	19363	47052
2009	688314	323191	134861	56218	23040	38446
2010	852561	486018	148301	60174	23412	35775
2011	1081652	609260	224134	66304	24984	34787
2012	622190	772201	282943	102232	27750	35632
2013	1488084	448651	355756	129314	43304	38216
2014	772201	1101298	208147	160974	54776	49021
2015	583617	560172	519696	94278	66970	61084
2016	370275	422946	260667	238709	39301	75132
2017	501822	266199	194269	118777	100007	66636