Year	Total
1985	41632000000
1986	41820000000
1987	43473000000
1988	45021000000
1989	44331000000
1990	42141000000.00001
1991	40861999999.99999
1992	35610000000
1993	37997000000
1994	38133000000
1995	41788999999.99999
1996	42716000000
1997	42803000000.00001
1998	41711000000.00001
1999	38248000000.00001
2000	40924000000
2001	43968000000
2002	42678999999.99999
2003	42600000000
2004	41621000000
2005	44365000000
2006	45843000000
2007	43297000000
2008	45037000000
2009	42964000000
2010	46653000000
2011	50797000000
2012	47328999999.99999
2013	43784000000
2014	47485000000
2015	49228000000
2016	45093000000