Year	Percent
1950	10.25565
1955	10.38384
1960	10.51667
1965	11.05918
1970	10.42227
1975	10.53681
1980	11.90495
1985	11.27322
1990	11.63538
1995	7.60211
2000	10.36056
2005	10.54325
2010	10.49747
2015	12.55907
2020	11.27545
2025	11.59259
2030	11.51022
2035	11.07351
2040	10.96226
2045	10.79258
2050	10.44502
2055	9.99437
2060	9.5325
2065	9.09264
2070	8.73186
2075	8.39432
2080	8.06736
2085	7.71414
2090	7.35757
2095	7.04505
2100	6.75419