Year	Percent
1950	13.28095
1955	12.54079
1960	16.08168
1965	15.39039
1970	14.94102
1975	15.87609
1980	15.78593
1985	14.39742
1990	15.03039
1995	13.99878
2000	12.95078
2005	12.94133
2010	12.07658
2015	10.92726
2020	10.32841
2025	10.44544
2030	10.42027
2035	10.04223
2040	9.25495
2045	8.3236
2050	7.66844
2055	7.39993
2060	7.30379
2065	7.10675
2070	6.71063
2075	6.22016
2080	5.84229
2085	5.68872
2090	5.68217
2095	5.66578
2100	5.52753