Year	Percent
1950	10.50255
1955	10.05613
1960	9.61469
1965	9.61324
1970	11.26903
1975	11.13447
1980	10.38033
1985	10.84889
1990	10.30709
1995	7.81337
2000	13.75987
2005	12.64161
2010	12.38052
2015	10.5553
2020	8.97971
2025	9.46849
2030	9.46528
2035	9.15723
2040	8.48198
2045	7.90389
2050	7.62098
2055	7.46149
2060	7.22027
2065	6.88154
2070	6.5574
2075	6.32184
2080	6.16247
2085	6.03382
2090	5.87961
2095	5.71592
2100	5.57278