Table 3. Estimates of stock size in numbers (millions)
Year\Age	0	1	2	3	4+
1988	36715.0	10642.7	5044.8	2452.1	798.0
1989	40795.5	17342.9	4969.1	1603.4	798.0
1990	59070.9	19270.4	8072.7	1422.5	472.9
1991	51359.3	27903.1	8992.4	2516.2	454.5
1992	49073.1	24260.4	13054.1	3058.4	872.7
1993	32956.4	23180.5	11370.5	4722.6	1124.2
1994	46153.6	15567.5	10882.7	4357.5	1832.6
1995	60914.3	21801.4	7308.9	4176.9	1693.3
1996	33466.0	28773.9	10213.8	2607.5	1515.3
1997	38807.9	15808.2	13469.7	3546.7	922.2
1998	43685.3	18331.6	7408.6	4861.3	1300.8
1999	35494.3	20635.5	8577.1	2529.1	1692.1
2000	55449.3	16766.3	9670.4	3090.7	926.2
2001	64856.0	26192.4	7868.0	3651.4	1182.8
2002	63272.6	30635.8	12286.3	2929.2	1378.9
2003	73517.3	29887.8	14373.4	4604.8	1113.1
2004	65812.3	34727.1	14035.2	5556.0	1801.4
2005	86505.9	31087.5	16280.2	5122.1	2059.2
2006	58808.0	40862.5	14593.7	6222.0	1982.5
2007	35117.1	27778.9	19179.8	5551.5	2397.7
2008	16615.0	16588.1	13059.9	7710.8	2253.4
2009	19090.1	7848.4	7786.6	4979.5	2977.9
2010	21447.2	9017.5	3682.4	2922.8	1895.0
2011	17380.9	10131.0	4226.5	1333.6	1075.5
2012	20571.9	8210.1	4728.9	1330.7	430.2
2013	87645.1	9717.5	3821.5	1352.7	392.2
2014	17872.2	41400.6	4507.5	971.1	356.7
2015	25076.8	8442.2	19067.6	898.7	203.9