Year	Number of
1990	1282000
1991	1331000
1992	1373000
1993	733200
1994	371600
1995	1392000
1996	1146000
1997	1331000
1998	1280000
1999	906600
2001	998100
2002	1067000
2003	1206000
2004	1289000
2005	1638000
2006	1419000