Year	Percent
1950	11.56115
1955	11.59266
1960	11.44431
1965	11.95291
1970	12.21783
1975	12.15129
1980	12.04575
1985	12.81717
1990	14.19782
1995	12.84954
2000	12.67328
2005	12.78611
2010	13.02712
2015	13.26716
2020	13.15711
2025	12.8479
2030	12.41483
2035	12.14598
2040	11.88564
2045	11.56279
2050	11.16046
2055	10.73574
2060	10.30906
2065	9.90728
2070	9.52802
2075	9.16077
2080	8.81539
2085	8.48036
2090	8.16981
2095	7.87
2100	7.58692