Year	Percent
1950	8.52479
1955	7.09047
1960	6.25461
1965	5.31118
1970	5.00108
1975	4.94373
1980	4.19076
1985	4.26517
1990	6.2305
1995	7.27722
2000	8.10731
2005	7.43207
2010	6.99164
2015	8.01957
2020	10.17889
2025	12.90637
2030	14.66563
2035	15.75094
2040	16.79437
2045	18.75255
2050	21.25624
2055	23.34172
2060	24.16201
2065	24.28502
2070	24.8684
2075	26.95097
2080	28.49078
2085	29.31115
2090	29.76783
2095	30.32147
2100	31.01264