Year	% (national estimate)
1960	33.01783764106298
1970	43.61770365618987
1975	51.876192495230015
1976	54.37500000000001
1978	57.50092148912642
1980	30.212483399734396
1983	63.42111927070144
1985	59.74333416396711
1987	57.9591836734694
1988	57.59615384615384
1989	57.526424492771234
1990	58.13356164383562
1991	57.0510488662544
1992	57.919593121821265
1993	58.42092397946712
1994	57.96888398872964
1995	59.724759469004994
1996	59.201934703748485
1997	59.39548434085944
1998	59.46435034382917
1999	61.07850330154072
2000	60.19912881144991
2001	62.673423719889435
2002	63.977230540774656
2003	62.19156661631019
2004	60.87530210987001
2005	62.33867144286993
2006	62.93223416521981
2007	63.1935479577849
2008	62.323766030321536
2009	63.439003002683805
2010	64.01984449808623
2011	64.45940594059407
2012	64.29654053766586
2013	64.55311747390957
2014	65.02665570379015
2015	65.38466716026116
2016	64.01869781192984
2017	61.26493534835507
2018	62.6257191341418
2019	64.14781443042521
2020	63.628476117817755
2021	64.06229551105875
2022	69.26109732561343