Year	Personnel
1985	91600
1989	110000
1990	106000
1991	101000
1992	79000
1993	70000
1994	53000
1995	47200
1996	46300
1997	44450
1998	43700
1999	41750
2000	39300
2001	39400
2002	39200
2003	40800
2004	36000
2005	37000
2006	40000
2007	39000
2008	39000
2009	39482
2010	35736
2011	34050
2012	30700
2013	37500
2014	37600
2015	36350
2016	33800
2017	32000
2018	31500
2019	26000
2020	24000