Year	Percent
1950	10.05993
1955	10.27131
1960	10.34931
1965	10.15055
1970	9.87364
1975	9.98564
1980	9.98767
1985	9.89983
1990	10.3639
1995	10.81386
2000	10.88298
2005	10.52897
2010	10.22412
2015	10.29294
2020	10.63448
2025	10.83468
2030	10.91482
2035	10.68692
2040	10.46035
2045	10.29593
2050	10.14501
2055	9.95883
2060	9.71632
2065	9.43582
2070	9.15358
2075	8.86074
2080	8.60874
2085	8.37398
2090	8.12483
2095	7.87369
2100	7.62789