Year	Total
1984	1136000000
1985	1370000000
1986	1503000000
1987	1557000000
1988	1643000000
1989	1712000000
1990	1814000000
1991	1695000000
1992	1989000000
1993	2167000000
1994	2329000000
1995	2437000000
1996	2651000000
1997	2673000000
1998	2985000000
1999	3092000000
2000	3083000000
2001	3263000000
2002	3526000000
2003	3741000000
2004	3936000000
2005	4310000000
2006	5099000000
2007	5988000000
2008	5254000000