Year	Number
1988	212700
1989	210500
1990	216000
1991	224300
1992	226600
1993	237800
1994	258000
1995	277800
1996	292600
1997	331900
1998	348900
1999	334900.0009765625
2000	322489
2001	330364
2010	337507.6956380106
2011	334453.43624841643
2012	368656.7445157089
2013	374076
2014	475027
2017	501845
2018	508823.9597298387
2019	495925.5831283564
2020	271667.512
2021	237384.37699999998