Year	Number
1974	127500
1975	173000
1976	240100
1977	299800
1978	374500
1979	456500
1980	521500
1981	577800
1982	569800
1983	601800
1984	674200
1985	717500
1986	647400
1987	621500
1988	698400
1989	752800
1990	770900
1991	875500
1992	981100
1993	1080000
1994	1150600
1995	1072500
1996	1200300
1997	1164600
1998	1207000
1999	2325200
2000	2672972
2001	2778116
2002	3570521
2003	3184104
2004	4453071
2005	6041040
2006	7070851
2007	8879109
2008	9702479
2009	10211229
2010	12391268
2011	14568106
2012	17187171
2013	18737348
2014	21425066
2015	25263224
2016	31209097
2017	29949181
2018	29178923
2019	32953297
2020	10640789
2021	14832936