Year	Percent
1950	27.03059
1955	27.21531
1960	26.52055
1965	25.13132
1970	24.63866
1975	25.50989
1980	27.27555
1985	29.2831
1990	30.65167
1995	31.16196
2000	31.20107
2005	31.17458
2010	31.15747
2015	31.1901
2020	30.90899
2025	30.55461
2030	30.16148
2035	29.63466
2040	29.17734
2045	28.42866
2050	27.52504
2055	26.56076
2060	25.64222
2065	24.77149
2070	23.9477
2075	23.1825
2080	22.50149
2085	21.92643
2090	21.46385
2095	21.0981
2100	20.81356