Year	Number of
1980	705600
1981	769500
1982	923100
1983	1075000
1984	1109000
1985	1169000
1986	1280000
1987	1403000
1988	1457000
1989	1510000
1990	1519000
1991	1555000
1992	1121000
1993	1081000
1994	1114000
1995	1218000
1996	1290000
1997	1133000
1998	1102000
1999	1219000
2000	1116000
2001	1085000
2002	1061000
2003	1073000
2004	1136000
2005	1156000
2006	1229000
2007	1296000