Year	Personnel
1985	37000
1989	43000
1990	51000
1991	41000
1992	36000
1993	32000
1994	33000
1995	30700
1996	30700
1997	34300
1998	28870
1999	31000
2000	27000
2001	26700
2002	26600
2003	26600
2004	25000
2005	47000
2006	16000
2007	19000
2008	19000
2009	26450
2010	24450
2011	24450
2012	25800
2013	25800
2014	25800
2015	24950
2016	23950
2017	23000
2018	23250
2019	23000
2020	25000