Year	Percent
1950	14.59662
1955	14.96991
1960	15.16954
1965	15.17027
1970	14.82029
1975	14.32979
1980	13.92032
1985	13.54417
1990	12.91133
1995	12.62536
2000	12.48289
2005	12.35623
2010	12.72105
2015	13.28548
2020	13.98466
2025	14.7699
2030	15.38847
2035	15.83799
2040	16.5948
2045	17.60649
2050	18.67965
2055	19.67858
2060	20.42704
2065	20.99216
2070	21.56435
2075	22.18502
2080	22.76021
2085	23.23567
2090	23.60466
2095	23.90123
2100	24.13701