Year	Percent
1980	112.95738
1981	130.89199
1982	114.67034
1983	108.8424
1984	128.07737
1985	132.78303
1986	91.17822
1987	88.78831
1988	79.63169
1989	71.52996
1990	57.89949
1991	82.72423
1992	58.00765
1993	59.5028
1994	67.2001
1995	57.86487
1996	54.85781
1997	45.92851
1998	60.83053
1999	32.01283
2000	30.47996
2001	40.51694
2002	35.88628
2003	24.94153
2004	22.63516
2005	19.61536
2006	25.39414
2007	33.52718
2008	23.85193
2009	31.17689
2010	42.36333
2011	33.76781
2012	61.92914
2013	44.49216
2014	42.88459
2015	49.96679
2016	42.24999
2017	46.44278
2018	51.4734
2019	48.31669
2020	91.32899
2021	86.88789