Year	Total
1985	15417000000
1986	16935000000
1987	18092000000
1988	19599000000
1989	21085000000
1990	18477000000
1991	10780000000
1992	16885000000
1993	20178000000
1994	22802000000
1995	23724000000
1996	25475000000
1997	26724000000
1998	29984000000
1999	31576000000
2000	32323000000
2001	34299000000
2002	36361999999.99999
2003	39802000000
2004	41256000000
2005	43733999999.99999
2006	47607000000
2007	48753000000
2008	51748999999.99999
2009	53218000000
2010	57083000000
2011	57457000000
2012	62655000000
2013	60982000000
2014	65141999999.99999
2015	68292000000
2016	71146999999.99998