Year	Number
1976	739.4138755980862
1977	90.03278221208666
1978	13.032435143572187
1979	16.943703801022465
1980	19.942865653932078
1981	18.133042339644327
1982	2.3119424240339903
1983	4.283309004198024
1984	5.019202934181559
1985	7.213306261037888
1986	5.960866081956993
1987	4.363970541928856
1988	1.9871173585769872
1989	2.018011836351008
1990	2.301228773181995
1991	2.7783595510001318
1992	2.5253326883179263
1993	3.5693362038082626
1994	3.50574782315105
1995	2.592938961750734
1996	2.059031010898042
1997	1.967362891002093
1998	2.0068414524080906
1999	1.9373783248067644
2000	2.0891264425470983
2001	2.8560500749772446
2002	2.321638527456924
2003	2.271104013703802
2004	2.3372135471389277
2005	2.8244290715244995
2006	2.7021201365474523
2007	2.517705805821404
2008	3.932636944331282
2009	4.147592546056345
2010	3.544480086179101
2011	3.897885817479036
2012	4.275047794811393
2013	4.183322496659421
2014	2.876751496857961
2015	3.5191095225390936
2016	4.237846398506379
2017	3.5414573055038776
2018	3.0188140686394616
2019	3.126873725673215
2020	2.731773348700599
2021	4.215692246092428
2022	4.325092324370892
2023	6.512388388991491