Year	Personnel
1985	334000
1989	318000
1990	308000
1991	301000
1992	293000
1993	271000
1994	257000
1995	233000
1996	221000
1997	218000
1998	218000
1999	218000
2000	212500
2001	211400
2002	210400
2003	212600
2004	205000
2005	217000
2006	181000
2007	160000
2008	160000
2009	178470
2010	174020
2011	165650
2012	169150
2013	159150
2014	154700
2015	152350
2016	150250
2017	148000
2018	148450
2019	149000
2020	153000