Year	Personnel
1985	385100
1989	506000
1990	493000
1991	473000
1992	471000
1993	450000
1994	436000
1995	585000
1996	580900
1997	580900
1998	554100
1999	521200
2000	503100
2001	482600
2002	471100
2003	454300
2004	445000
2005	445000
2006	440000
2007	436000
2008	436000
2009	326939
2010	359378
2011	367550
2012	359500
2013	359500
2014	356850
2015	356850
2016	356850
2017	347000
2018	341500
2019	342000
2020	338000