Year	Total
1971	146000000
1972	166000000
1973	190000000
1974	215000000
1975	256000000
1976	290100000
1977	337100000
1978	386100000
1979	433100000
1980	493100000
1981	557100000
1982	581100000
1983	643100000
1984	649100000
1985	774100000
1986	834200000
1987	916200000
1988	927200000
1989	1009000000
1990	1095000000
1991	1191000000
1992	1328000000
1993	1490000000
1994	1622000000
1995	1751000000
1996	1838000000
1997	2012000000
1998	2060000000
1999	2068000000
2000	2191000000
2001	2411000000
2002	2513000000
2003	2736000000
2004	2742000000
2005	2856000000
2006	2969000000
2007	3060000000
2008	3382000000