Year	Percent
1950	10.63539
1955	9.23424
1960	10.16782
1965	12.51686
1970	12.6415
1975	12.48844
1980	11.96213
1985	11.68608
1990	12.92307
1995	14.56972
2000	13.69782
2005	10.28287
2010	7.4742
2015	6.85108
2020	7.66232
2025	7.91619
2030	6.99951
2035	5.76512
2040	4.86222
2045	4.62896
2050	4.85441
2055	5.08308
2060	4.98545
2065	4.64608
2070	4.34621
2075	4.29565
2080	4.48146
2085	4.71375
2090	4.79065
2095	4.68932
2100	4.53355