Year	Personnel
1985	66200
1989	91000
1990	110000
1991	110000
1992	139000
1993	139000
1994	146000
1995	233400
1996	233300
1997	233300
1998	233300
1999	231000
2000	247000
2001	262600
2002	262600
2003	304600
2004	336000
2005	336000
2006	398000
2007	411000
2008	411000
2009	441828
2010	441828
2011	440224
2012	440224
2013	455750
2014	455750
2015	481100
2016	481100
2017	481000
2018	481200
2019	481000
2020	428000